/* ==========================================================================
   Design Tokens & CSS Variables
   ========================================================================== */
:root {
    --bg-dark:           #0D0E15;
    --bg-card:           rgba(18, 10, 36, 0.70);
    --bg-card-border:    rgba(138, 75, 255, 0.22);

    --text-primary:      #f3f0fa;
    --text-secondary:    #a39cb5;
    --text-muted:        #635a79;

    --purple-500:        #9b59f5;
    --purple-400:        #b07eff;
    --purple-300:        #c9a8ff;
    --cyan-400:          #00f0ff;
    --green-400:         #39ff14;
    --yellow-400:        #ffe135;
    --pink-400:          #FF007F;

    --border-dim:        rgba(138, 75, 255, 0.18);
    --border-accent:     rgba(176, 126, 255, 0.4);
    --radius:            14px;
    --radius-sm:         8px;
    --transition:        0.22s cubic-bezier(.4,0,.2,1);
    --font-display:      'Oxanium', sans-serif;
    --font-body:         'Plus Jakarta Sans', sans-serif;

    /* Sizes */
    --control-panel-width: 480px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background decoration */
.glass-bg {
    position: fixed; inset: 0; z-index: 0;
    background:
        radial-gradient(ellipse 80% 60% at 15% 10%, rgba(110,40,200,0.28) 0%, transparent 70%),
        radial-gradient(ellipse 60% 50% at 85% 80%, rgba(0,200,255,0.15) 0%, transparent 70%),
        radial-gradient(ellipse 100% 80% at 50% 50%, rgba(8,4,20,1) 0%, var(--bg-dark) 100%);
    pointer-events: none;
}
.glow-orb {
    position: fixed; border-radius: 50%; pointer-events: none; filter: blur(90px); z-index: 0;
}
.orb-1 {
    width: 500px; height: 500px;
    top: -160px; left: -100px;
    background: radial-gradient(circle, rgba(110,40,220,0.35) 0%, transparent 65%);
    animation: orbFloat1 14s ease-in-out infinite alternate;
}
.orb-2 {
    width: 450px; height: 450px;
    bottom: -140px; right: -80px;
    background: radial-gradient(circle, rgba(0,200,255,0.22) 0%, transparent 65%);
    animation: orbFloat2 17s ease-in-out infinite alternate;
}
@keyframes orbFloat1 { to { transform: translate(40px,50px) scale(1.1); } }
@keyframes orbFloat2 { to { transform: translate(-30px,-60px) scale(1.08); } }

/* ==========================================================================
   Header
   ========================================================================== */
.app-header {
    position: relative; z-index: 2;
    text-align: center;
    padding: 2.5rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--border-dim);
    background: rgba(10,5,22,0.5);
    backdrop-filter: blur(12px);
}
.logo {
    display: flex; align-items: center; justify-content: center; gap: 0.8rem;
    margin-bottom: 0.4rem;
}
.logo-mark {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-right: 4px;
}
.logo-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 0 6px var(--cyan-400), 0 0 20px rgba(0,240,255,0.4);
    line-height: 1;
    z-index: 2;
}
.logo-star {
    position: absolute;
    top: -4px;
    right: -4px;
    font-size: 1.1rem;
    color: #FF007F;
    filter: drop-shadow(0 0 2px #FF007F) drop-shadow(0 0 10px #FF007F) drop-shadow(0 0 20px #FF007F);
    z-index: 3;
    animation: flicker 3s infinite alternate;
}

@keyframes flicker {
  0%, 100% { opacity: 1; }
  41% { opacity: 1; }
  42% { opacity: 0.85; }
  43% { opacity: 0.95; }
  44% { opacity: 0.88; }
  45% { opacity: 1; }
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 2rem; font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-primary);
}
.accent-text {
    color: #00F3FF;
    text-shadow: 0 0 18px var(--cyan-400), 0 0 35px rgba(0,240,255,0.55);
}
.subtitle { color: var(--text-muted); font-size: 0.82rem; }

/* ==========================================================================
   Layout
   ========================================================================== */
.app-container {
    position: relative; z-index: 1;
    display: flex;
    align-items: flex-start;
    gap: 1.6rem;
    max-width: 1360px;
    margin: 0 auto;
    padding: 1.6rem 1.2rem;
}

/* Left panel */
.control-panel {
    flex: 0 0 var(--control-panel-width);
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Right panel – sticky */
.preview-panel {
    flex: 1 1 0;
    min-width: 0;
    position: sticky;
    top: 1.2rem;
    align-self: flex-start;
    height: max-content;
    z-index: 2;
}

/* ==========================================================================
   Card
   ========================================================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius);
    padding: 1.4rem;
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 40px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.05);
    transition: border-color var(--transition);
}
.card:hover { border-color: var(--border-accent); }

/* ==========================================================================
   Accordion
   ========================================================================== */
.neon-accordion {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius);
    backdrop-filter: blur(18px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    overflow: hidden;
    transition: border-color var(--transition);
}
.neon-accordion[open] { border-color: var(--border-accent); }
.neon-accordion.disabled-accordion { opacity: 0.55; pointer-events: none; }
.neon-accordion.enabled { opacity: 1; pointer-events: auto; }

.accordion-header {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 1.1rem;
    cursor: pointer;
    user-select: none;
    border-radius: calc(var(--radius) - 1px);
    transition: background var(--transition);
}
.accordion-header:hover { background: rgba(155,89,245,0.09); }
.accordion-header::marker,
.accordion-header::-webkit-details-marker { display: none; }

.header-title {
    display: flex; align-items: center; gap: 0.55rem;
    font-family: var(--font-display);
    font-size: 0.9rem; font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-primary);
}
.icon-purple { color: var(--purple-400); }
.icon-yellow { color: var(--yellow-400); }
.icon-blue   { color: #4dacff; }
.icon-cyan   { color: var(--cyan-400); }
.icon-green  { color: var(--green-400); }
.arrow-icon { color: var(--text-muted); transition: transform var(--transition); font-size: 0.75rem; }
details[open] > summary .arrow-icon { transform: rotate(180deg); }

.accordion-content { padding: 0 1.2rem 1.2rem; display: flex; flex-direction: column; gap: 1rem; }

/* ==========================================================================
   Drop Zone / Upload
   ========================================================================== */
.file-input-hidden { display: none; }
.drop-zone-wrapper {
    position: relative;
    border: 2px dashed var(--border-dim);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: border-color var(--transition), background var(--transition);
    cursor: pointer;
    background: rgba(155,89,245,0.04);
}
.drop-zone-wrapper:hover,
.drop-zone-wrapper.drag-over {
    border-color: var(--purple-400);
    background: rgba(155,89,245,0.10);
}
.upload-content { pointer-events: none; }
.icon-wrap {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: rgba(155,89,245,0.14);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 0.8rem;
}
.upload-icon { font-size: 1.8rem; color: var(--purple-400); }
.drop-zone-wrapper h3 { font-size: 1rem; color: var(--text-primary); margin-bottom: 0.3rem; }
.drop-zone-wrapper p { font-size: 0.82rem; color: var(--text-secondary); }
.browse-btn {
    color: var(--purple-400); font-weight: 600;
    text-decoration: underline; text-underline-offset: 3px; cursor: pointer;
}
.file-tip { display: block; margin-top: 0.4rem; font-size: 0.74rem; color: var(--text-muted); }

.file-info-bar {
    display: flex; align-items: center; gap: 0.6rem;
    margin-top: 0.8rem; padding: 0.5rem 0.8rem;
    background: rgba(155,89,245,0.1);
    border-radius: var(--radius-sm);
    font-size: 0.82rem; color: var(--text-secondary);
}
.text-success { color: var(--green-400); }
.id-hidden { display: none !important; }

/* ==========================================================================
   Preset Grid
   ========================================================================== */
.preset-section-title {
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.06em;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-dim);
}
.preset-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.preset-btn {
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.55rem 0.75rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-dim);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.8rem; font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform 0.1s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.preset-btn:hover {
    background: rgba(155,89,245,0.15);
    border-color: var(--border-accent);
    transform: translateY(-1px);
}
.preset-btn.applied {
    border-color: var(--yellow-400);
    box-shadow: 0 0 10px rgba(255,225,53,0.3);
}
.preset-preview {
    width: 14px; height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-block;
}
.preset-lbl { color: var(--text-muted); font-size: 0.72rem; }

.section-desc {
    font-size: 0.78rem; color: var(--text-muted);
    background: rgba(155,89,245,0.06);
    padding: 0.5rem 0.7rem;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--border-accent);
    line-height: 1.5;
}

/* ==========================================================================
   Decorations
   ========================================================================== */
.decor-presets {
    display: flex; flex-wrap: wrap; gap: 0.5rem;
    margin-top: 0.3rem;
}
.decor-btn {
    width: 44px; height: 44px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-dim);
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    font-family: var(--font-body);
}
.decor-btn:hover { background: rgba(155,89,245,0.15); border-color: var(--border-accent); color: var(--text-primary); }
.decor-btn.active {
    background: rgba(155,89,245,0.25);
    border-color: var(--purple-400);
    color: var(--purple-300);
    box-shadow: 0 0 10px rgba(155,89,245,0.3);
}
.decor-btn.text-icon { font-size: 1.1rem; }
.decor-adjustments { display: flex; flex-direction: column; gap: 0.8rem; }

.metal-presets { display: flex; gap: 0.6rem; margin-top: 0.3rem; }
.metal-btn {
    flex: 1;
    padding: 0.45rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-dim);
    background: rgba(255,255,255,0.04);
    color: var(--metal-color, #fff);
    cursor: pointer; font-size: 0.8rem;
    transition: background var(--transition), border-color var(--transition);
}
.metal-btn.active {
    border-color: var(--metal-color, var(--purple-400));
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 8px rgba(255,215,0,0.2);
}
.metal-btn[data-metal="silver"].active { box-shadow: 0 0 8px rgba(224,224,224,0.2); }
.metal-btn[data-metal="bronze"].active { box-shadow: 0 0 8px rgba(205,127,50,0.2); }

/* ==========================================================================
   Controls
   ========================================================================== */
.control-group { display: flex; flex-direction: column; gap: 0.45rem; }
.control-label {
    font-size: 0.78rem; font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 0.05em;
}
.label-with-value { display: flex; align-items: center; justify-content: space-between; }
.value-display {
    font-family: var(--font-display);
    font-size: 0.8rem; color: var(--purple-300);
    background: rgba(155,89,245,0.12);
    padding: 0.1rem 0.5rem;
    border-radius: 5px;
}
.slider-hint { font-size: 0.71rem; color: var(--text-muted); line-height: 1.4; }

.control-row { display: flex; gap: 1rem; }
.control-row > .control-group { flex: 1; min-width: 0; }

.radio-group { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.flex-wrap { flex-wrap: wrap; gap: 0.5rem !important; }
.radio-label {
    display: flex; align-items: center; gap: 0.4rem;
    font-size: 0.8rem; color: var(--text-secondary);
    cursor: pointer;
}
.radio-label input { accent-color: var(--purple-400); cursor: pointer; }

.panel-divider { border: none; border-top: 1px solid var(--border-dim); margin: 0.2rem 0; }
.panel-divider-sub { border: none; border-top: 1px dashed var(--border-dim); margin: 0.2rem 0; }

/* Slider */
.neon-slider {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--purple-400) var(--pct, 50%), rgba(255,255,255,0.08) var(--pct, 50%));
    outline: none; cursor: pointer;
    transition: background var(--transition);
}
.neon-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--purple-400);
    border: 2px solid rgba(255,255,255,0.3);
    box-shadow: 0 0 10px rgba(155,89,245,0.7);
    cursor: pointer;
    transition: transform 0.1s;
}
.neon-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Toggle switch */
.toggle-switch-wrapper {
    display: flex; align-items: center; justify-content: space-between;
    gap: 0.8rem;
}
.toggle-label { font-size: 0.8rem; color: var(--text-secondary); flex: 1; }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
    position: absolute; inset: 0;
    border-radius: 999px;
    background: rgba(255,255,255,0.12);
    cursor: pointer;
    transition: background var(--transition);
}
.switch-slider::before {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    border-radius: 50%;
    left: 3px; top: 3px;
    background: var(--text-secondary);
    transition: transform var(--transition), background var(--transition);
}
.switch input:checked + .switch-slider { background: rgba(155,89,245,0.5); }
.switch input:checked + .switch-slider::before {
    transform: translateX(20px);
    background: var(--purple-400);
    box-shadow: 0 0 8px rgba(155,89,245,0.8);
}

/* Color picker inputs */
.color-picker-input-wrap {
    display: flex; align-items: center; gap: 0.6rem;
}
.color-picker-input-wrap input[type="color"] {
    width: 38px; height: 32px;
    border: none; border-radius: var(--radius-sm);
    background: none; cursor: pointer;
    padding: 2px;
}
.picker-value-text {
    font-family: var(--font-display); font-size: 0.82rem;
    color: var(--text-secondary);
}

/* Color presets for neon */
.color-presets-wrapper { display: flex; flex-direction: column; gap: 0.5rem; }
.color-presets { display: flex; align-items: center; gap: 0.55rem; flex-wrap: wrap; }
.color-btn {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: transparent;
    border: 2px solid rgba(255,255,255,0.15);
    cursor: pointer;
    position: relative;
    display: flex; align-items: center; justify-content: center;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.color-dot {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--btn-color, #fff);
    box-shadow: 0 0 10px var(--btn-color, #fff);
}
.color-btn:hover { transform: scale(1.1); }
.color-btn.active {
    border-color: var(--btn-color, var(--purple-400));
    box-shadow: 0 0 14px var(--btn-color, var(--purple-400));
    transform: scale(1.15);
}
.custom-color-picker-wrap {
    position: relative; width: 38px; height: 38px;
}
.custom-color-picker-wrap input[type="color"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.custom-trigger {
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 2px dashed var(--border-dim);
    background: rgba(255,255,255,0.06);
    color: var(--text-secondary);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 0.9rem;
    transition: background var(--transition), border-color var(--transition);
}
.custom-trigger:hover { background: rgba(155,89,245,0.2); border-color: var(--purple-400); }

.btn-icon {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; font-size: 0.9rem; padding: 0.2rem;
    transition: color var(--transition);
}
.btn-icon:hover { color: var(--pink-400); }

/* gradient panel */
.gradient-panel { display: flex; flex-direction: column; gap: 0.8rem; }
.decor-color-panel { display: flex; flex-direction: column; gap: 0.6rem; }

/* ==========================================================================
   Preview Panel
   ========================================================================== */
.preview-card { display: flex; flex-direction: column; gap: 1.2rem; }
.card-header {
    display: flex; align-items: center; justify-content: space-between;
}
.card-header h2 {
    font-family: var(--font-display);
    font-size: 1rem; font-weight: 700;
    color: var(--text-primary);
    display: flex; align-items: center; gap: 0.5rem;
}
.card-header h2 i { color: var(--cyan-400); }

.preview-bg-toggle { display: flex; gap: 0.4rem; }
.bg-toggle-btn {
    width: 34px; height: 34px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-dim);
    background: rgba(255,255,255,0.04);
    color: var(--text-muted);
    cursor: pointer; font-size: 0.8rem;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.bg-toggle-btn:hover { background: rgba(155,89,245,0.15); }
.bg-toggle-btn.active {
    background: rgba(155,89,245,0.22);
    border-color: var(--purple-400);
    color: var(--purple-300);
}

/* Badge canvas container */
.badge-sizes-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.2rem;
    padding: 1.4rem;
    background: rgba(0,0,0,0.3);
    border-radius: var(--radius);
    border: 1px solid var(--border-dim);
}
.badge-box {
    display: flex; flex-direction: column; align-items: center; gap: 0.7rem;
}
.badge-canvas-wrapper {
    border-radius: 8px; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--transition);
}
/* Sizes for displayed canvas wrappers */
.badge-canvas-wrapper:has(#canvas-72) { width: 144px; height: 144px; } /* 72×2 */
.badge-canvas-wrapper:has(#canvas-36) { width: 108px; height: 108px; } /* 36×3 */
.badge-canvas-wrapper:has(#canvas-18) { width: 90px; height: 90px; }  /* 18×5 */

canvas { image-rendering: pixelated; display: block; }
#canvas-72 { width: 144px; height: 144px; }
#canvas-36 { width: 108px; height: 108px; }
#canvas-18 { width: 90px; height: 90px; }

.badge-label {
    font-family: var(--font-display);
    font-size: 0.72rem; color: var(--text-secondary);
    text-align: center;
}
.badge-sublabel { color: var(--text-muted); font-size: 0.68rem; }

/* Background modes for preview */
.transparent-grid {
    background-image:
        linear-gradient(45deg, #383838 25%, transparent 25%),
        linear-gradient(-45deg, #383838 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #383838 75%),
        linear-gradient(-45deg, transparent 75%, #383838 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
}
.bg-dark-mode { background: #18181b !important; }
.bg-light-mode { background: #efeff1 !important; }

/* Actual 18px */
.actual-size-bar {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-dim);
    border-radius: var(--radius);
    padding: 0.9rem 1.2rem;
}
.actual-size-inner {
    display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap;
}
.actual-size-title {
    font-size: 0.8rem; color: var(--cyan-400);
    font-weight: 600; white-space: nowrap;
    display: flex; align-items: center; gap: 0.35rem;
}
.actual-badge-box {
    width: 28px; height: 28px;
    border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}
.actual-size-desc { font-size: 0.75rem; color: var(--text-muted); }

/* Badge placeholder for chat / actual size */
.badge-placeholder-18 img {
    width: 18px; height: 18px;
    display: block;
    image-rendering: pixelated;
}

/* ==========================================================================
   Chat Simulator
   ========================================================================== */
.chat-simulator-card { display: flex; flex-direction: column; gap: 0.6rem; }
.chat-simulator-card h3 {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 600;
    color: var(--text-secondary);
    display: flex; align-items: center; gap: 0.4rem;
}
.chat-simulator-card h3 i { color: var(--purple-400); }

.chat-toggle-tabs { display: flex; gap: 0.5rem; }
.chat-tab-btn {
    flex: 1; padding: 0.4rem;
    border: 1px solid var(--border-dim);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.04);
    color: var(--text-muted); font-size: 0.75rem;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.chat-tab-btn:hover { background: rgba(155,89,245,0.12); color: var(--text-secondary); }
.chat-tab-btn.active { background: rgba(155,89,245,0.2); border-color: var(--purple-400); color: var(--purple-300); }

.chat-box {
    border-radius: var(--radius-sm);
    padding: 0.8rem 1rem;
    display: flex; flex-direction: column; gap: 0.6rem;
    border: 1px solid var(--border-dim);
    font-size: 0.82rem;
}
.chat-dark { background: #1a1a1d; }
.chat-light { background: #efeff1; }
.chat-light .chat-message { color: #333; }
.chat-light .chat-colon { color: #555; }
.chat-line { display: flex; align-items: center; gap: 0.4rem; flex-wrap: nowrap; }
.chat-user { font-weight: 700; }
.user-color-1 { color: #9b59f5; }
.user-color-2 { color: #00f0ff; }
.chat-colon { color: #6b7280; }
.chat-message { color: #d1d5db; }
.chat-light .chat-message { color: #19191a; }

/* ==========================================================================
   Action Area & Button
   ========================================================================== */
.action-area {
    display: flex;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.8rem;
    width: 100%;
}
.btn {
    flex: 1; padding: 0.8rem 1.4rem;
    border-radius: var(--radius-sm);
    border: none; cursor: pointer;
    font-family: var(--font-display);
    font-weight: 700; font-size: 0.9rem; letter-spacing: 0.04em;
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    transition: opacity var(--transition), transform 0.1s, box-shadow var(--transition);
}
.action-area .btn {
    width: 100%;
    white-space: normal;
    word-break: break-word;
    text-align: center;
    padding: 0.8rem 1rem;
    font-size: 0.88rem;
    line-height: 1.4;
    height: auto;
}
.btn-primary {
    background: linear-gradient(135deg, #7a3fff, #b07eff);
    color: #fff;
    box-shadow: 0 4px 18px rgba(122,63,255,0.4);
}
.btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 28px rgba(122,63,255,0.65);
    transform: translateY(-2px);
}
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-disabled { opacity: 0.45; cursor: not-allowed; }

/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
    position: relative; z-index: 2;
    text-align: center; padding: 1.2rem;
    border-top: 1px solid var(--border-dim);
    font-size: 0.72rem; color: var(--text-muted);
}

/* ==========================================================================
   Utility
   ========================================================================== */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.2rem 1rem;
    }
    .control-panel {
        flex: none;
        width: 100%;
    }
    .preview-panel {
        position: relative;
        top: 0;
        width: 100%;
        z-index: 1;
    }
    
    /* プリセットグリッドの調整: モバイルで左右に突き抜けないように綺麗に収める */
    .preset-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }
    .preset-btn[style*="grid-column"] {
        grid-column: auto !important;
    }
}

/* スマートフォン用の極小画面向け調整 */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    .app-header {
        padding: 1.5rem 1rem 1rem;
    }
    .logo h1 {
        font-size: 1.6rem;
    }
    .app-container {
        padding: 1rem 0.6rem;
    }
    .card, .neon-accordion {
        padding: 1rem;
        border-radius: 10px;
    }
    .accordion-content {
        padding: 0 0.7rem 0.7rem;
        gap: 0.8rem;
    }
    .accordion-header {
        padding: 0.8rem 0.9rem;
    }
    
    /* プリセットグリッドをスマホで完全1列に */
    .preset-grid {
        grid-template-columns: 1fr;
    }
    .preset-btn {
        font-size: 0.78rem;
        padding: 0.5rem;
    }
    
    /* タブボタンもスマホ幅に最適化 */
    .input-tabs {
        flex-wrap: wrap;
        gap: 0.3rem;
    }
    .input-tab-btn {
        font-size: 0.75rem;
        padding: 0.6rem 0.4rem;
    }
    
    /* ラジオボタンなどの要素がはみ出さないように */
    .grid-options {
        flex-wrap: wrap;
        gap: 0.6rem 1rem;
    }
    .radio-group {
        gap: 0.6rem;
    }
    
    /* ピクセルアートキャンバスのはみ出し防止 */
    .paint-editor-container {
        gap: 0.8rem;
    }
    .paint-canvas-wrapper {
        padding: 4px;
        max-width: 100%;
    }
    #paint-canvas {
        width: 100% !important;
        max-width: 288px;
        height: auto !important;
        aspect-ratio: 1 / 1;
    }
    
    /* 装飾パーツのボタン */
    .decor-btn {
        width: 38px;
        height: 38px;
        font-size: 0.75rem;
    }
    
    /* モーダルがはみ出さないように */
    .modal-overlay {
        padding: 0.8rem;
    }
    .modal-content {
        max-width: 100%;
    }
    .modal-form {
        padding: 1rem;
        gap: 0.9rem;
    }
    .modal-actions {
        flex-direction: column-reverse;
        gap: 0.6rem;
    }
    .modal-actions .btn {
        width: 100%;
    }
    .control-row {
        flex-direction: column;
        gap: 0.8rem;
    }
}

/* ==========================================================================
   Paint Editor (v4)
   ========================================================================== */
.input-tabs {
    display: flex;
    border-bottom: 2px solid var(--border-dim);
    margin-bottom: 1.2rem;
    gap: 0.2rem;
}
.input-tab-btn {
    flex: 1;
    padding: 0.7rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.82rem;
    cursor: pointer;
    transition: color var(--transition), border-bottom var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}
.input-tab-btn:hover {
    color: var(--text-secondary);
}
.input-tab-btn.active {
    color: var(--purple-400);
    border-bottom-color: var(--purple-400);
}

.tab-panel.id-hidden {
    display: none !important;
}

.paint-editor-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.2rem;
    padding: 0.5rem 0;
}

.paint-canvas-wrapper {
    border: 2px solid var(--border-dim);
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius);
    padding: 8px;
    box-shadow: inset 0 0 16px rgba(0, 0, 0, 0.6);
    position: relative;
}
#paint-canvas {
    display: block;
    width: 288px;
    height: 288px;
    image-rendering: pixelated;
    cursor: crosshair;
}

.paint-controls {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.paint-tools {
    display: flex;
    justify-content: space-around;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-dim);
    padding: 0.5rem;
    border-radius: 8px;
}
.paint-tool-btn {
    width: 44px;
    height: 40px;
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.paint-tool-btn:hover {
    background: rgba(155, 89, 245, 0.15);
    color: var(--purple-300);
    border-color: var(--purple-500);
}
.paint-tool-btn.active {
    background: rgba(155, 89, 245, 0.25);
    color: #fff;
    border-color: var(--purple-400);
    box-shadow: 0 0 8px rgba(155, 89, 245, 0.4);
}
.paint-tool-btn.danger:hover {
    background: rgba(233, 35, 35, 0.2);
    color: #ff5555;
    border-color: #ff3333;
}

.paint-grid-size {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.grid-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem 1.2rem;
    padding-left: 0.2rem;
}

.paint-color-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.paint-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}
.palette-color {
    width: 26px;
    height: 26px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.25);
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition);
}
.palette-color:hover {
    transform: scale(1.15);
}
.palette-color.active {
    border-color: #fff;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

/* ==========================================================================
   Neon Guide (v7.5)
   ========================================================================== */
.guide-container {
    max-width: 1360px;
    margin: 1.5rem auto 0;
    padding: 0 1.2rem;
    position: relative;
    z-index: 1;
}
.guide-accordion {
    border-color: rgba(0, 240, 255, 0.25) !important;
}
.guide-accordion[open] {
    border-color: var(--cyan-400) !important;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.15);
}
.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.2rem;
    margin-top: 0.6rem;
}
.guide-step {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: 1rem;
    position: relative;
    transition: background var(--transition), border-color var(--transition);
}
.guide-step:hover {
    background: rgba(0, 240, 255, 0.04);
    border-color: rgba(0, 240, 255, 0.15);
}
.step-num {
    width: 24px;
    height: 24px;
    background: var(--cyan-400);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    box-shadow: 0 0 8px var(--cyan-400);
}
.guide-step h4 {
    font-family: var(--font-display);
    font-size: 0.88rem;
    margin-bottom: 0.3rem;
    color: var(--text-primary);
}
.guide-step p {
    font-size: 0.76rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ==========================================================================
   Gallery Section & Cards (v7.5)
   ========================================================================== */
.gallery-container {
    max-width: 1360px;
    margin: 2.5rem auto 3rem;
    padding: 0 1.2rem;
    position: relative;
    z-index: 1;
}
.gallery-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-dim);
    padding-bottom: 0.8rem;
}
.gallery-header h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.gallery-controls {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.sort-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
}
.gallery-tabs {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-dim);
    border-radius: var(--radius-sm);
    padding: 2px;
}
.gallery-tab-btn {
    padding: 0.4rem 0.9rem;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 5px;
    transition: all var(--transition);
}
.gallery-tab-btn:hover {
    color: var(--text-secondary);
}
.gallery-tab-btn.active {
    background: var(--purple-500);
    color: #fff;
    box-shadow: 0 0 10px rgba(155, 89, 245, 0.5);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.gallery-empty, .gallery-loading, .gallery-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.88rem;
    background: rgba(255, 255, 255, 0.01);
    border: 1px dashed var(--border-dim);
    border-radius: var(--radius);
}
.gallery-loading i {
    font-size: 1.5rem;
    color: var(--purple-400);
    margin-bottom: 0.5rem;
    display: block;
}

.gallery-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.gallery-card:hover {
    transform: translateY(-4px);
    border-color: rgba(176, 126, 255, 0.5);
    box-shadow: 0 8px 30px rgba(155, 89, 245, 0.2);
}
.gallery-card-preview {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-dim);
}
.gallery-preview-img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    image-rendering: pixelated;
    filter: drop-shadow(0 0 6px rgba(255,255,255,0.15));
}
.gallery-card-info {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: 0.6rem;
}
.gallery-card-title {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}
.gallery-card-creator {
    font-size: 0.76rem;
    color: var(--text-muted);
}
.creator-name {
    color: var(--purple-300);
    font-weight: 600;
}
.gallery-card-profile {
    font-size: 0.74rem;
    color: var(--text-secondary);
    line-height: 1.4;
    background: rgba(0,0,0,0.2);
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.gallery-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.05);
    padding-top: 0.5rem;
    margin-top: auto;
}
.gallery-downloads {
    color: var(--cyan-400);
    font-weight: 600;
}
.gallery-twitch-link {
    color: #a970ff;
    text-decoration: none;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: color var(--transition);
}
.gallery-twitch-link:hover {
    color: #bf94ff;
    text-shadow: 0 0 8px rgba(169, 112, 255, 0.5);
}

.gallery-card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.4rem;
}
.gallery-card-actions .btn-sm {
    padding: 0.5rem 0.6rem;
    font-size: 0.74rem;
    border-radius: 6px;
}
.customize-btn {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-dim);
    color: var(--text-secondary);
}
.customize-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--cyan-400);
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

/* ==========================================================================
   Modal Popup Styles (v7.5)
   ========================================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(6, 3, 14, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    animation: fadeIn 0.2s ease-out;
}
.modal-content {
    background: var(--bg-card);
    border: 1px solid rgba(176, 126, 255, 0.35);
    border-radius: var(--radius);
    width: 100%;
    max-width: 580px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(155, 89, 245, 0.15);
    backdrop-filter: blur(25px);
    animation: slideUp 0.25s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    overflow: hidden;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-dim);
}
.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.modal-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color var(--transition);
}
.modal-close-btn:hover {
    color: var(--pink-400);
}
.modal-form {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.modal-input {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-dim);
    border-radius: var(--radius-sm);
    padding: 0.7rem 0.9rem;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.85rem;
    width: 100%;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.modal-input:focus {
    outline: none;
    border-color: var(--purple-400);
    box-shadow: 0 0 10px rgba(155, 89, 245, 0.3);
}
.text-area {
    resize: none;
}
.modal-preview-box {
    background: rgba(0,0,0,0.25);
    border: 1px solid var(--border-dim);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
}
.modal-preview-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.4rem;
}
.modal-preview-meta h4 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}
.modal-preview-meta p {
    font-size: 0.78rem;
    color: var(--text-muted);
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    margin-top: 0.5rem;
}
.modal-actions .btn {
    flex: 0 1 auto;
    padding: 0.65rem 1.5rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ==========================================================================
   Beginner Guide Styles (v12)
   ========================================================================== */
.beginner-guide-trigger-neon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 1.2rem;
    padding: 0.75rem 1.6rem;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.15) 0%, rgba(155, 89, 245, 0.15) 100%);
    border: 2px solid var(--cyan-400);
    border-radius: 999px;
    color: #fff;
    font-size: 0.88rem;
    font-weight: 700;
    font-family: var(--font-body);
    text-decoration: none;
    letter-spacing: 0.03em;
    transition: all var(--transition);
    cursor: pointer;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.25), inset 0 0 10px rgba(0, 240, 255, 0.1);
    position: relative;
    overflow: hidden;
}
.beginner-guide-trigger-neon::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.25), transparent);
    transform: skewX(-25deg);
    transition: none;
}
.beginner-guide-trigger-neon:hover::before {
    left: 150%;
    transition: 0.6s ease-in-out;
}
.beginner-guide-trigger-neon:hover {
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.3) 0%, rgba(155, 89, 245, 0.3) 100%);
    border-color: #fff;
    color: #fff;
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.55), 0 0 10px rgba(155, 89, 245, 0.35);
    transform: translateY(-2px) scale(1.02);
}

.beginner-guide-container {
    max-width: 1360px;
    margin: 3.5rem auto 2rem;
    padding: 0 1.2rem;
    position: relative;
    z-index: 1;
    scroll-margin-top: 2rem; /* ジャンプ時の余白 */
}
.beginner-guide-header {
    text-align: center;
    margin-bottom: 2.2rem;
    border-bottom: 2px solid var(--border-dim);
    padding-bottom: 1.2rem;
}
.beginner-guide-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}
.beginner-guide-header p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.beginner-guide-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.8rem;
}

/* カード共通のベーススタイル */
.guide-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius);
    padding: 2rem;
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.03);
    position: relative;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}
.guide-card:hover {
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(155, 89, 245, 0.15);
    transform: translateY(-2px);
}
.guide-card-badge {
    position: absolute;
    top: -11px;
    left: 1.5rem;
    background: var(--purple-500);
    color: #fff;
    padding: 0.25rem 0.9rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    font-family: var(--font-display);
    box-shadow: 0 0 10px rgba(155, 89, 245, 0.5);
}
.guide-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-top: 0.4rem;
    margin-bottom: 1.1rem;
    color: var(--text-primary);
    line-height: 1.4;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.guide-card-lead {
    font-size: 0.95rem;
    color: var(--purple-300);
    font-weight: 600;
    margin-bottom: 1.1rem;
    line-height: 1.5;
    padding-bottom: 0.9rem;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}
.guide-card-body {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}
.guide-card-body strong {
    color: var(--text-primary);
}

/* 特設カード: 明るいグラデーションボーダー */
.guide-card.special-card {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(22, 10, 45, 0.8), rgba(8, 25, 42, 0.8));
    border: none;
    position: relative;
    padding: 2.5rem;
}
.guide-card.special-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    padding: 2px;
    background: linear-gradient(135deg, #b026ff, #00f0ff, #39ff14);
    -webkit-mask: 
       linear-gradient(#fff 0 0) content-box, 
       linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
}
.guide-card.special-card:hover {
    box-shadow: 0 15px 50px rgba(0, 240, 255, 0.15), 0 0 20px rgba(57, 255, 20, 0.15);
}
.special-badge {
    background: linear-gradient(135deg, #b026ff, #00f0ff);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}
.special-card h3 {
    font-size: 1.3rem;
    color: #fff;
    text-shadow: 0 0 12px rgba(176, 38, 255, 0.4);
}
.special-card h3 i {
    color: var(--cyan-400);
    animation: pulseGlow 2s infinite alternate;
}
@keyframes pulseGlow {
    from { filter: drop-shadow(0 0 2px var(--cyan-400)); }
    to { filter: drop-shadow(0 0 8px var(--cyan-400)); }
}
.special-sub-section {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    padding: 1.4rem;
}
.special-sub-section h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--cyan-400);
}

/* スマホ対応（初心者ガイド部分） */
@media (max-width: 768px) {
    .beginner-guide-container {
        margin-top: 2.5rem;
    }
    .beginner-guide-header h2 {
        font-size: 1.3rem;
    }
    .beginner-guide-cards {
        grid-template-columns: 1fr;
    }
    .guide-card.special-card {
        padding: 1.8rem;
    }
}

/* ==========================================================================
   Theme Toggle Button & Light Mode Theme Overrides
   ========================================================================== */

/* テーマ切り替えボタンのスタイル */
.theme-toggle-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all var(--transition);
    z-index: 100;
}
.theme-toggle-btn:hover {
    border-color: var(--border-accent);
    transform: scale(1.05);
}
.theme-toggle-btn .icon-sun {
    display: none;
    color: var(--yellow-400);
}
.theme-toggle-btn .icon-moon {
    display: block;
    color: var(--purple-300);
}

/* ライトモード時のアイコン出し分け */
body.light-mode .theme-toggle-btn .icon-sun {
    display: block;
}
body.light-mode .theme-toggle-btn .icon-moon {
    display: none;
}
body.light-mode .theme-toggle-btn {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* ライトモードの変数オーバーライド */
body.light-mode {
    --bg-dark:           #f6f8fb;
    --bg-card:           #ffffff;
    --bg-card-border:    rgba(123, 77, 255, 0.08);

    --text-primary:      #2d263e;
    --text-secondary:    #5c556e;
    --text-muted:        #8e87a0;

    --purple-500:        #7445f2;
    --purple-400:        #8c63ff;
    --purple-300:        #b091ff;
    --cyan-400:          #008be5;
    --green-400:         #1ca89b;
    --yellow-400:        #e09200;
    --pink-400:          #e64566;

    --border-dim:        rgba(123, 77, 255, 0.08);
    --border-accent:     rgba(123, 77, 255, 0.25);
    --radius:            20px;
    --radius-sm:         12px;
    --font-display:      'M PLUS Rounded 1c', sans-serif;
    --font-body:         'M PLUS Rounded 1c', sans-serif;
}

/* ライトモード時の背景・オーブ調整 */
body.light-mode .glass-bg {
    background:
        radial-gradient(ellipse 80% 60% at 15% 10%, rgba(116, 69, 242, 0.04) 0%, transparent 70%),
        radial-gradient(ellipse 60% 50% at 85% 80%, rgba(0, 139, 229, 0.03) 0%, transparent 70%),
        #f6f8fb !important;
}
body.light-mode .glow-orb {
    display: none;
}

/* ライトモード時のロゴ・テキスト調整 */
body.light-mode .accent-text {
    color: var(--purple-500);
    text-shadow: none;
    background: linear-gradient(135deg, var(--purple-500) 0%, var(--cyan-400) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}
body.light-mode .app-header {
    background: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid rgba(123, 77, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}
body.light-mode .beginner-guide-trigger-neon {
    background: linear-gradient(135deg, rgba(116, 69, 242, 0.06) 0%, rgba(0, 139, 229, 0.06) 100%);
    color: var(--purple-500);
    border: 1px solid rgba(123, 77, 255, 0.15);
    box-shadow: none;
}
body.light-mode .beginner-guide-trigger-neon:hover {
    background: linear-gradient(135deg, rgba(116, 69, 242, 0.12) 0%, rgba(0, 139, 229, 0.12) 100%);
    border-color: var(--purple-500);
}

/* ライトモード用アコーディオン・カード調整 */
body.light-mode .neon-accordion,
body.light-mode .card {
    box-shadow: 0 10px 30px rgba(123, 77, 255, 0.04), 0 1px 3px rgba(0, 0, 0, 0.01), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}
body.light-mode .accordion-header {
    background: rgba(123, 77, 255, 0.02);
    border-bottom: 1px solid rgba(123, 77, 255, 0.04);
}
body.light-mode .accordion-header:hover {
    background: rgba(123, 77, 255, 0.06);
}
body.light-mode .accordion-content {
    background: #ffffff;
}

/* スライダー・トグル */
body.light-mode .neon-slider {
    background: #e9e6f2;
}
body.light-mode .neon-slider::-webkit-slider-thumb {
    background: var(--purple-500);
    box-shadow: 0 2px 6px rgba(116, 69, 242, 0.3);
}
body.light-mode .value-display {
    color: var(--purple-500);
    font-weight: 700;
}
body.light-mode .toggle-switch-wrapper .toggle-label {
    color: var(--text-secondary);
}
body.light-mode .switch-slider {
    background-color: #e9e6f2;
}
body.light-mode input:checked + .switch-slider {
    background-color: var(--purple-500);
}

/* タブボタン */
body.light-mode .input-tab-btn {
    background: rgba(123, 77, 255, 0.03);
    border: 1px solid rgba(123, 77, 255, 0.08);
    color: var(--text-secondary);
}
body.light-mode .input-tab-btn:hover {
    background: rgba(123, 77, 255, 0.06);
}
body.light-mode .input-tab-btn.active {
    background: var(--purple-500);
    color: #ffffff;
    border-color: var(--purple-500);
    box-shadow: 0 4px 12px rgba(116, 69, 242, 0.2);
}

/* アップロードエリア */
body.light-mode .drop-zone-wrapper {
    background: rgba(123, 77, 255, 0.01);
    border-color: rgba(123, 77, 255, 0.15);
}
body.light-mode .drop-zone-wrapper:hover {
    border-color: var(--purple-500);
    background: rgba(123, 77, 255, 0.03);
}
body.light-mode .browse-btn {
    background: var(--purple-500);
    color: #ffffff;
}

/* ペイントエディタ */
body.light-mode .paint-canvas-wrapper {
    background: #ffffff;
    border-color: rgba(123, 77, 255, 0.15);
}
body.light-mode .paint-tool-btn {
    background: #ffffff;
    border: 1px solid rgba(123, 77, 255, 0.15);
    color: var(--text-secondary);
}
body.light-mode .paint-tool-btn:hover:not(:disabled) {
    background: rgba(123, 77, 255, 0.06);
    border-color: var(--purple-300);
}
body.light-mode .paint-tool-btn.active {
    background: var(--purple-500);
    color: #ffffff;
    border-color: var(--purple-500);
    box-shadow: 0 4px 10px rgba(116, 69, 242, 0.15);
}
body.light-mode .paint-palette .palette-color {
    border-color: rgba(0, 0, 0, 0.08);
}
body.light-mode .paint-palette .palette-color.active {
    outline-color: var(--purple-500);
}

/* プリセットセクション */
body.light-mode .preset-section-title {
    color: var(--purple-500);
    border-bottom-color: rgba(123, 77, 255, 0.1);
}
body.light-mode .preset-btn {
    background: rgba(123, 77, 255, 0.02);
    border-color: rgba(123, 77, 255, 0.1);
    color: var(--text-primary);
}
body.light-mode .preset-btn:hover {
    background: rgba(123, 77, 255, 0.06);
    border-color: var(--purple-300);
}
body.light-mode .preset-btn.active {
    border-color: var(--purple-500);
    background: rgba(123, 77, 255, 0.06);
    box-shadow: 0 0 10px rgba(116, 69, 242, 0.1);
}
body.light-mode .effect-none-btn {
    border-color: rgba(123, 77, 255, 0.15) !important;
    background: rgba(123, 77, 255, 0.02) !important;
    color: var(--text-secondary) !important;
}
body.light-mode .effect-none-btn:hover {
    border-color: var(--purple-400) !important;
    background: rgba(123, 77, 255, 0.06) !important;
}

/* 装飾セクション */
body.light-mode .decor-btn {
    background: rgba(123, 77, 255, 0.02);
    border-color: rgba(123, 77, 255, 0.1);
    color: var(--text-secondary);
}
body.light-mode .decor-btn:hover {
    background: rgba(123, 77, 255, 0.06);
    border-color: var(--purple-300);
}
body.light-mode .decor-btn.active {
    background: var(--purple-500);
    color: #ffffff;
    border-color: var(--purple-500);
    box-shadow: 0 4px 10px rgba(116, 69, 242, 0.15);
}

/* カラーピッカー調整 */
body.light-mode .color-picker-input-wrap {
    border-color: rgba(123, 77, 255, 0.15);
    background: #ffffff;
}
body.light-mode .picker-value-text {
    color: var(--text-secondary);
}

/* 実寸表示バー・テキスト */
body.light-mode .actual-size-inner {
    background: rgba(123, 77, 255, 0.02);
    border-color: rgba(123, 77, 255, 0.08);
}
body.light-mode .actual-size-title {
    color: var(--purple-500);
}
body.light-mode .actual-size-desc,
body.light-mode .badge-sublabel {
    color: var(--text-muted);
}
body.light-mode .badge-label {
    color: var(--text-primary);
}

/* ギャラリーボタンなど */
body.light-mode .btn-primary {
    background: linear-gradient(135deg, var(--purple-500), var(--purple-400));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(116, 69, 242, 0.2);
}
body.light-mode .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(116, 69, 242, 0.35);
}
body.light-mode .btn-secondary {
    background: rgba(123, 77, 255, 0.04);
    border-color: rgba(123, 77, 255, 0.12);
    color: var(--purple-500);
}
body.light-mode .btn-secondary:hover {
    background: rgba(123, 77, 255, 0.08);
}

/* クイックガイドカード */
body.light-mode .guide-accordion {
    box-shadow: 0 8px 24px rgba(123, 77, 255, 0.03);
}
body.light-mode .guide-step {
    border-color: rgba(123, 77, 255, 0.08);
}
body.light-mode .step-num {
    background: rgba(123, 77, 255, 0.06);
    color: var(--purple-500);
}

/* スマホ対応（初心者ガイド部分）のライトモード調整 */
@media (max-width: 768px) {
    body.light-mode .theme-toggle-btn {
        top: 1.5rem;
        right: 1.5rem;
    }
}

/* ==========================================================================
   Twitch Dashboard Link Card Styles (v31)
   ========================================================================== */
.twitch-link-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 1.2rem;
    box-sizing: border-box;
    backdrop-filter: blur(10px);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.twitch-link-card:hover {
    border-color: rgba(145, 70, 255, 0.3);
    box-shadow: 0 5px 15px rgba(145, 70, 255, 0.1);
}
.twitch-link-title {
    margin: 0 0 0.8rem 0;
    font-size: 0.95rem;
    font-family: var(--font-display);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
}
.twitch-link-title i {
    color: #9146FF;
    filter: drop-shadow(0 0 4px rgba(145, 70, 255, 0.4));
}
.twitch-link-body {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}
.input-with-icon {
    position: relative;
    width: 100%;
}
.input-with-icon i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.82rem;
    color: var(--text-muted);
}
#twitch-username-input {
    width: 100%;
    padding: 0.6rem 0.6rem 0.6rem 2.2rem;
    box-sizing: border-box;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #fff;
    font-size: 0.85rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
#twitch-username-input:focus {
    border-color: #9146FF;
    box-shadow: 0 0 8px rgba(145, 70, 255, 0.3);
}
.twitch-links-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.twitch-direct-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition);
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
}
.twitch-direct-link i {
    font-size: 0.75rem;
    transition: transform var(--transition);
}
.twitch-direct-link.disabled {
    opacity: 0.45;
    pointer-events: none;
    cursor: not-allowed;
    background: transparent;
}
.twitch-direct-link.disabled i {
    color: var(--text-muted) !important;
}
.twitch-direct-link:not(.disabled):hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.05);
    transform: translateX(3px);
}
.twitch-direct-link:not(.disabled) i.icon-cyan {
    color: var(--cyan-400);
    filter: drop-shadow(0 0 3px var(--cyan-400));
}
.twitch-direct-link:not(.disabled) i.icon-purple {
    color: #b026ff;
    filter: drop-shadow(0 0 3px #b026ff);
}
.twitch-direct-link:not(.disabled) {
    color: var(--text-primary);
    font-weight: 600;
}

/* Light mode override */
body.light-mode .twitch-link-card {
    background: rgba(123, 77, 255, 0.02);
    border-color: rgba(123, 77, 255, 0.08);
}
body.light-mode .twitch-link-card:hover {
    border-color: rgba(145, 70, 255, 0.2);
    box-shadow: 0 5px 15px rgba(145, 70, 255, 0.05);
}
body.light-mode #twitch-username-input {
    background: #ffffff;
    border-color: rgba(123, 77, 255, 0.15);
    color: var(--text-primary);
}
body.light-mode #twitch-username-input:focus {
    border-color: var(--purple-400);
    box-shadow: 0 0 8px rgba(155, 89, 245, 0.2);
}
body.light-mode .twitch-direct-link {
    background: rgba(123, 77, 255, 0.01);
}
body.light-mode .twitch-direct-link:not(.disabled):hover {
    background: rgba(123, 77, 255, 0.04);
}