/* =====================================================
   Favicon Forge — style.css
   Creative, playful favicon studio
   ===================================================== */

:root {
    --primary: #6366F1;
    --accent: #F59E0B;
    --bg: #0C0C18;
    --surface: #141428;
    --surface2: #1E1E38;
    --border: rgba(99, 102, 241, 0.15);
    --text: #E2E0FF;
    --text-muted: #7B78A8;
    --radius: 12px;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse at 60% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 55%);
    pointer-events: none;
    z-index: 0;
}

::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.hidden {
    display: none !important;
}

.glass-card {
    background: rgba(20, 20, 40, 0.72);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

/* ── Header ───────────────────────────────────────── */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(12, 12, 24, 0.9);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-canvas {
    border-radius: 8px;
}

.logo-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text);
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ── Main ─────────────────────────────────────────── */
.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    grid-template-columns: 280px 1fr 360px;
    gap: 20px;
    align-items: start;
    position: relative;
    z-index: 1;
}

/* ── Input Panel ──────────────────────────────────── */
.input-panel {
    overflow: hidden;
}

.tab-row {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.src-tab {
    flex: 1;
    background: transparent;
    border: none;
    padding: 11px 6px;
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition);
}

.src-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.src-tab:hover:not(.active) {
    color: var(--text);
}

.src-pane {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.src-pane.hidden {
    display: none;
}

/* Controls */
.ctrl-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.emoji-input {
    font-size: 3rem;
    text-align: center;
    width: 80px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    padding: 8px;
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition);
}

.emoji-input:focus {
    border-color: var(--primary);
}

.emoji-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.emoji-btn {
    font-size: 1.4rem;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface2);
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
}

.emoji-btn:hover {
    border-color: var(--primary);
    transform: scale(1.15);
}

.text-input {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    padding: 8px;
    outline: none;
    width: 80px;
    letter-spacing: 0.05em;
    transition: border-color var(--transition);
}

.text-input:focus {
    border-color: var(--primary);
}

.ctrl-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.select-field {
    flex: 1;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text);
    font-size: 0.8rem;
    padding: 7px 10px;
    outline: none;
    transition: border-color var(--transition);
}

.select-field:focus {
    border-color: var(--primary);
}

input[type="color"] {
    width: 36px;
    height: 30px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: none;
    cursor: pointer;
}

.toggle {
    position: relative;
    display: inline-block;
    width: 32px;
    height: 16px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    inset: 0;
    border-radius: 8px;
    background: var(--surface2);
    border: 1px solid var(--border);
    transition: background var(--transition);
}

.slider::before {
    content: '';
    position: absolute;
    left: 2px;
    top: 2px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: transform var(--transition), background var(--transition);
}

.toggle input:checked+.slider {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
}

.toggle input:checked+.slider::before {
    transform: translateX(16px);
    background: var(--primary);
}

/* Upload zone */
.upload-zone {
    background: var(--surface2);
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 32px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-muted);
    text-align: center;
    font-size: 0.85rem;
    transition: all var(--transition);
}

.upload-zone:hover {
    border-color: var(--primary);
    color: var(--text);
}

.upload-zone.drag-over {
    border-color: var(--accent);
    background: rgba(245, 158, 11, 0.05);
}

.upload-sub {
    font-size: 0.7rem;
}

.divider {
    height: 1px;
    background: var(--border);
    margin: 4px 16px;
}

.ctrl-group {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
}

.shape-btns {
    display: flex;
    gap: 5px;
}

.shape-btn {
    width: 34px;
    height: 34px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 7px;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.shape-btn[aria-pressed="true"] {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.shape-btn:hover:not([aria-pressed="true"]) {
    color: var(--text);
    border-color: var(--text-muted);
}

.range-field {
    flex: 1;
    -webkit-appearance: none;
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.range-field::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.btn-small {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.72rem;
    padding: 5px 10px;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-small:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.card-title {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 12px;
}

.btn-generate {
    background: linear-gradient(135deg, var(--primary), #818CF8);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 12px;
    margin: 12px 16px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: box-shadow var(--transition), transform var(--transition);
}

.btn-generate:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

/* ── Preview Section ──────────────────────────────── */
.preview-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.live-preview-card {
    padding: 16px;
}

.canvas-row {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.canvas-wrap {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    flex-shrink: 0;
}

#liveCanvas {
    display: block;
    image-rendering: pixelated;
    border-radius: 8px;
}

.size-previews {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: flex-end;
}

.size-preview-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.size-preview-item canvas {
    display: block;
    image-rendering: pixelated;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.size-preview-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

/* Browser mockup */
.browser-mockup-card {
    padding: 16px;
}

.browser-chrome {
    background: #2D2D44;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    overflow: hidden;
}

.browser-bar {
    background: #1A1A2E;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.browser-dots {
    display: flex;
    gap: 5px;
}

.browser-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #333;
}

.browser-dots span:nth-child(1) {
    background: #FF5F57;
}

.browser-dots span:nth-child(2) {
    background: #FEBC2E;
}

.browser-dots span:nth-child(3) {
    background: #28C840;
}

.browser-url-bar {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.tab-strip {
    display: flex;
    align-items: center;
    background: #1A1A2E;
    padding: 6px 8px 0;
    gap: 4px;
}

.browser-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    background: #2D2D44;
    border-radius: 8px 8px 0 0;
    padding: 6px 12px;
    font-size: 0.75rem;
    color: var(--text);
    max-width: 200px;
}

.tab-favicon-preview {
    border-radius: 2px;
    flex-shrink: 0;
}

.tab-title-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-close {
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
}

.tab-new {
    color: var(--text-muted);
    padding: 4px 8px;
    cursor: pointer;
    font-size: 1rem;
}

/* ── Output Section ───────────────────────────────── */
.output-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.output-card {
    padding: 16px;
}

.size-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}

.size-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 8px;
    text-align: center;
}

.size-item canvas {
    display: block;
    image-rendering: pixelated;
}

.size-item-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.size-item-dl {
    font-size: 0.65rem;
    color: var(--primary);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    transition: color var(--transition);
}

.size-item-dl:hover {
    color: #a5b4fc;
}

.output-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-secondary {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 9px 14px;
    cursor: pointer;
    transition: all var(--transition);
    flex: 1;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Snippet cards */
.snippet-card {
    overflow: hidden;
}

.snippet-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
}

.snippet-header .card-title {
    margin: 0;
}

.btn-copy-sm {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.7rem;
    padding: 4px 10px;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-copy-sm:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.code-block {
    background: var(--surface2);
    padding: 12px 14px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--text);
    line-height: 1.7;
    white-space: pre;
    overflow-x: auto;
    max-height: 150px;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1200px) {
    .main {
        grid-template-columns: 240px 1fr 320px;
    }
}

@media (max-width: 900px) {
    .main {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .main {
        padding: 14px;
    }

    .size-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}