/* ============================================================
   3D EMOJI PHOTOMOSAIC DESIGN SYSTEM (2026 EDITION)
   Clean, light-themed luxury glassmorphism with tactile 3D gold accents
   ============================================================ */

:root {
    --emoji-bg: #f8f9fc;
    --emoji-panel: rgba(255, 255, 255, 0.88);
    --emoji-text: #1a1a1a;
    --emoji-text-muted: #52525b;
    --emoji-accent: #b6952b; /* Sophisticated warm gold */
    --emoji-accent-light: rgba(182, 149, 43, 0.08);
    --emoji-accent-glow: rgba(182, 149, 43, 0.25);
    --emoji-border: rgba(0, 0, 0, 0.08);
    --emoji-shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.03);
    --emoji-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.07);
    --emoji-radius: 16px;
    --emoji-radius-sm: 8px;
    --emoji-font: 'Inter', sans-serif;
}

body {
    background: var(--emoji-bg) !important;
    font-family: var(--emoji-font);
    color: var(--emoji-text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

#bgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

.emoji-grid-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 30px;
    margin-top: 24px;
    align-items: start;
    position: relative;
    z-index: 1;
}

@media (max-width: 960px) {
    .emoji-grid-layout {
        grid-template-columns: 1fr;
    }
}

/* Segmented Tab Controls */
.tabs-container {
    display: flex;
    background: rgba(0, 0, 0, 0.04);
    padding: 4px;
    border-radius: var(--emoji-radius-sm);
    margin-bottom: 20px;
    gap: 4px;
}

.tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 12px;
    font-family: var(--emoji-font);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--emoji-text-muted);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.tab-btn:hover {
    color: var(--emoji-text);
    background: rgba(255, 255, 255, 0.5);
}

.tab-btn.active {
    background: #ffffff;
    color: var(--emoji-text);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    font-weight: 600;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Glassmorphic Control Card */
.emoji-card {
    background: var(--emoji-panel);
    border: 1px solid var(--emoji-border);
    border-radius: var(--emoji-radius);
    box-shadow: var(--emoji-shadow-subtle);
    padding: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 20px;
}

.emoji-card:hover {
    box-shadow: var(--emoji-shadow-hover);
    border-color: rgba(182, 149, 43, 0.2);
}

.emoji-card h3 {
    margin-top: 0;
    color: var(--emoji-text);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Upload Dropzone */
.upload-zone {
    border: 2px dashed rgba(0, 0, 0, 0.12);
    border-radius: var(--emoji-radius-sm);
    padding: 24px 16px;
    text-align: center;
    background: rgba(0, 0, 0, 0.015);
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--emoji-accent);
    background: var(--emoji-accent-light);
}

.upload-zone .upload-icon {
    font-size: 2rem;
    line-height: 1;
}

.upload-zone .upload-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--emoji-text);
}

.upload-zone .upload-subtitle {
    font-size: 0.8rem;
    color: var(--emoji-text-muted);
}

.upload-preview-wrap {
    display: none;
    width: 100%;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
}

.upload-preview-img {
    width: 100%;
    max-height: 180px;
    object-fit: contain;
    background: #111;
    border-radius: 8px;
}

.upload-reset-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

/* Form Groups & Sliders */
.form-group-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    gap: 15px;
}

.form-group-row label {
    font-size: 0.88rem;
    color: var(--emoji-text);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-grow: 1;
    justify-content: flex-end;
    max-width: 210px;
}

.form-group-row input[type="range"] {
    -webkit-appearance: none;
    width: 130px;
    height: 5px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
    outline: none;
}

.form-group-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--emoji-accent);
    cursor: pointer;
    border: 2px solid #ffffff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
    transition: transform 0.15s ease;
}

.form-group-row input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.value-display {
    font-size: 0.82rem;
    color: var(--emoji-accent);
    min-width: 42px;
    text-align: right;
    font-weight: 600;
}

/* Preset Chips & Archetypes */
.chips-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.chip-btn {
    border: 1px solid var(--emoji-border);
    background: #ffffff;
    padding: 8px 6px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--emoji-text-muted);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.chip-btn span.chip-icon {
    font-size: 1.1rem;
}

.chip-btn:hover {
    border-color: var(--emoji-accent);
    color: var(--emoji-text);
}

.chip-btn.active {
    border-color: var(--emoji-accent);
    background: var(--emoji-accent-light);
    color: var(--emoji-text);
    font-weight: 600;
    box-shadow: 0 0 0 1px var(--emoji-accent);
}

/* Primary Action Buttons */
.btn-generate-emoji {
    width: 100%;
    background: linear-gradient(135deg, #c5a034, #9a7b1b);
    color: #ffffff;
    border: none;
    padding: 14px 20px;
    border-radius: var(--emoji-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px var(--emoji-accent-glow);
    transition: all 0.25s ease;
    margin-top: 10px;
}

.btn-generate-emoji:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(182, 149, 43, 0.4);
}

.btn-generate-emoji:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.6);
}

/* Main Workspace Canvas Area */
.stage-card {
    background: var(--emoji-panel);
    border: 1px solid var(--emoji-border);
    border-radius: var(--emoji-radius);
    box-shadow: var(--emoji-shadow-subtle);
    padding: 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
}

.stage-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.stage-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--emoji-text-muted);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.stage-tools {
    display: flex;
    gap: 6px;
    align-items: center;
}

.tool-btn {
    border: 1px solid var(--emoji-border);
    background: #ffffff;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--emoji-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s ease;
}

.tool-btn:hover {
    border-color: var(--emoji-accent);
    background: var(--emoji-accent-light);
}

.tool-btn.active {
    background: var(--emoji-accent);
    color: #ffffff;
    border-color: var(--emoji-accent);
}

/* Canvas Viewport */
.canvas-viewport {
    position: relative;
    width: 100%;
    min-height: 520px;
    background: #0d0e12;
    border-radius: var(--emoji-radius-sm);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.4);
    cursor: crosshair;
}

#mosaicCanvas {
    display: none;
    max-width: 100%;
    max-height: 650px;
    object-fit: contain;
    border-radius: 4px;
    z-index: 1;
}

/* Magnifier Loupe */
.loupe-lens {
    position: absolute;
    width: 150px;
    height: 150px;
    border: 3px solid var(--emoji-accent);
    border-radius: 50%;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5), inset 0 0 15px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    display: none;
    overflow: hidden;
    background: #000;
    z-index: 10;
    transform: translate(-50%, -50%);
}

#loupeCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Split Compare Slider Bar */
.split-divider {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #ffffff;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
    z-index: 5;
    pointer-events: none;
    display: none;
}

.split-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    background: #ffffff;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--emoji-text);
}

/* Empty Placeholder in Canvas */
.canvas-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    width: 90%;
    max-width: 380px;
    pointer-events: none;
    z-index: 2;
}

.canvas-placeholder .empty-icon {
    font-size: 3.5rem;
    line-height: 1;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
}

.canvas-placeholder h3 {
    margin: 0;
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
}

.canvas-placeholder p {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.6);
}

/* Download Action Bar */
.export-bar {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-top: 6px;
}

@media (max-width: 600px) {
    .export-bar {
        grid-template-columns: 1fr;
    }
}

.btn-export {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--emoji-border);
    background: #ffffff;
    font-family: var(--emoji-font);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--emoji-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.btn-export:hover:not(:disabled) {
    border-color: var(--emoji-accent);
    background: var(--emoji-accent-light);
    transform: translateY(-1px);
}

.btn-export.primary {
    background: linear-gradient(135deg, #c5a034, #9a7b1b);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 12px var(--emoji-accent-glow);
}

.btn-export.primary:hover:not(:disabled) {
    box-shadow: 0 6px 18px rgba(182, 149, 43, 0.4);
}

.btn-export:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

/* Bridge CTA Banner (Funnel to 10k AI Photomosaics) */
.bridge-cta-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(245, 240, 225, 0.9));
    border: 1px solid rgba(182, 149, 43, 0.25);
    border-radius: var(--emoji-radius);
    padding: 20px 24px;
    margin-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    box-shadow: var(--emoji-shadow-subtle);
}

@media (max-width: 768px) {
    .bridge-cta-card {
        flex-direction: column;
        text-align: center;
    }
}

.bridge-text h4 {
    margin: 0 0 6px 0;
    font-size: 1.05rem;
    color: var(--emoji-text);
}

.bridge-text p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--emoji-text-muted);
}

.btn-bridge {
    background: #1a1a1a;
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.btn-bridge:hover {
    background: var(--emoji-accent);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--emoji-accent-glow);
}