/* =============================================
   Terminal Color Previewer — Styles
   ============================================= */

:root {
    --bg: #0e0e16;
    --bg-card: #16161e;
    --bg-elevated: #1a1a26;
    --border: #2a2a3a;
    --text: #c9d1d9;
    --text-secondary: #7b8494;
    --text-muted: #545c6e;
    --accent: #7c3aed;
    --accent-light: #a78bfa;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --transition: 0.2s ease;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Header */
.app-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo h1 {
    font-size: 1rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.select-sm {
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.625rem;
    font-size: 0.8125rem;
    font-family: var(--font-sans);
    cursor: pointer;
}

.select-sm:focus {
    outline: none;
    border-color: var(--accent);
}

.select-sm option {
    background: var(--bg-card);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.4rem 0.75rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-light);
}

.btn-sm {
    font-size: 0.75rem;
    padding: 0.3rem 0.5rem;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-sm:hover {
    background: var(--border);
    color: var(--text);
}

.btn-export {
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-export:hover {
    border-color: var(--accent);
    color: var(--accent-light);
}

/* Main */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem;
    display: grid;
    grid-template-columns: 340px 1fr;
    grid-template-rows: 1fr auto;
    gap: 1.25rem;
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.panel-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

/* Color Editor */
.color-editor {
    grid-row: 1 / 3;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.375rem;
}

.color-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.swatch-box {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.swatch-box:hover {
    border-color: var(--accent-light);
    transform: scale(1.08);
}

.swatch-box input[type="color"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.swatch-label {
    font-size: 0.5625rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

/* Row labels */
.color-row-label {
    grid-column: 1 / -1;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 0.375rem;
}

/* Meta Colors */
.meta-colors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.meta-color-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.meta-color-item input[type="color"] {
    width: 28px;
    height: 28px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: none;
    padding: 0;
}

.meta-color-item input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.meta-color-item input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

/* Contrast Check */
.contrast-check {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    font-size: 0.8125rem;
}

.contrast-pass {
    color: #4ade80;
}

.contrast-fail {
    color: #f87171;
}

.contrast-ratio {
    font-weight: 700;
    font-family: var(--font-mono);
}

/* Terminal Preview */
.terminal-preview {
    overflow: hidden;
    padding: 0;
}

.terminal-chrome {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

.terminal-dots {
    display: flex;
    gap: 0.375rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red {
    background: #ff5f57;
}

.dot-yellow {
    background: #febc2e;
}

.dot-green {
    background: #28c840;
}

.terminal-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.terminal-body {
    padding: 1rem 1.25rem;
    min-height: 350px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.6;
}

.terminal-body pre {
    margin: 0;
    white-space: pre;
}

/* Export Panel */
.export-panel {
    grid-column: 1 / -1;
}

.export-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.export-output {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.export-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.export-output pre {
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--text);
    overflow-x: auto;
    max-height: 300px;
    margin: 0;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 520px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1rem;
    font-weight: 700;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
}

.btn-close:hover {
    color: var(--text);
}

.modal-body {
    padding: 1rem 1.25rem;
}

.modal-desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.modal-body textarea {
    width: 100%;
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    resize: vertical;
}

.modal-body textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    z-index: 300;
    opacity: 0;
    transition: all 0.3s;
    pointer-events: none;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Responsive */
@media (max-width: 800px) {
    .app-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .color-editor {
        grid-row: auto;
    }
}

@media (max-width: 480px) {
    .header-inner {
        padding: 0.5rem 0.75rem;
    }

    .color-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}