/* ===================================
   CSS Variables & Reset
   =================================== */

:root {
    /* Colors */
    --color-bg: #0f0f0f;
    --color-surface: #1a1a1a;
    --color-surface-light: #252525;
    --color-text: #ffffff;
    --color-text-muted: #a0a0a0;
    --color-border: rgba(255, 255, 255, 0.1);

    --color-primary: #ff6b6b;
    --color-secondary: #4ecdc4;
    --color-accent: #ffe66d;

    /* Typography */
    --font-display: 'Righteous', cursive;
    --font-body: 'DM Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* ===================================
   Dynamic Background
   =================================== */

.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.15;
    z-index: 0;
    transition: all 1s ease;
    pointer-events: none;
}

/* ===================================
   Layout
   =================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

/* ===================================
   Header
   =================================== */

.header {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.logo {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 8s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.logo i {
    font-size: 0.8em;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* ===================================
   Palette Display
   =================================== */

.palette-section {
    margin-bottom: var(--spacing-xl);
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.color-swatch {
    background: var(--color-surface);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
    position: relative;
    cursor: pointer;
    border: 2px solid transparent;
}

.color-swatch:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: rgba(255, 255, 255, 0.2);
}

.color-display {
    height: 200px;
    width: 100%;
    position: relative;
    transition: all var(--transition);
}

.lock-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
}

.lock-btn:hover {
    opacity: 1;
    transform: scale(1.1);
    background: rgba(0, 0, 0, 0.7);
}

.lock-btn.locked {
    background: var(--color-primary);
    opacity: 1;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.color-info {
    padding: var(--spacing-md);
    background: var(--color-surface);
}

.color-value {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.05em;
}

.color-formats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.format-line {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-family: monospace;
}

.copy-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition);
}

.color-swatch.copying .copy-indicator {
    opacity: 1;
}

/* ===================================
   Vibe Input
   =================================== */

.vibe-input-section {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    border: 2px solid transparent;
    transition: all var(--transition);
}

.vibe-input-section:hover {
    border-color: rgba(255, 107, 107, 0.3);
}

.vibe-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.vibe-icon {
    color: var(--color-accent);
    font-size: 1.5rem;
    flex-shrink: 0;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1) rotate(10deg);
    }
}

.vibe-input {
    flex: 1;
    padding: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text);
    transition: all var(--transition);
}

.vibe-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(255, 230, 109, 0.1);
}

.vibe-input::placeholder {
    color: var(--color-text-muted);
}

.btn-vibe-generate {
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ff6b6b, #feca57);
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.btn-vibe-generate:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #ff8787, #fed766);
}

.btn-vibe-generate i {
    animation: wiggle 1s ease-in-out infinite;
}

@keyframes wiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-10deg);
    }
    75% {
        transform: rotate(10deg);
    }
}

.vibe-presets {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.vibe-preset {
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-bounce);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.vibe-preset:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-sm);
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(255, 230, 109, 0.1));
}

.vibe-preset:active {
    transform: translateY(0) scale(0.95);
}

/* ===================================
   Controls
   =================================== */

.controls-section {
    margin-bottom: var(--spacing-xl);
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.control-group {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.control-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text);
}

.control-title i {
    color: var(--color-primary);
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* ===================================
   Buttons
   =================================== */

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: transparent;
    color: white;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: transparent;
    color: white;
    font-size: 1rem;
    padding: var(--spacing-md) var(--spacing-lg);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-surface-light);
}

.kbd {
    font-family: monospace;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: auto;
}

/* ===================================
   Saved Palettes
   =================================== */

.saved-section {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title i {
    color: var(--color-primary);
}

.count {
    font-size: 1rem;
    background: var(--color-surface);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-family: var(--font-body);
    font-weight: 600;
    color: var(--color-text-muted);
}

.saved-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.saved-palette {
    background: var(--color-surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.saved-palette:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.saved-colors {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    height: 80px;
}

.saved-color {
    width: 100%;
    height: 100%;
}

.saved-actions {
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.saved-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.delete-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 4px;
    transition: all var(--transition);
}

.delete-btn:hover {
    color: var(--color-primary);
    background: rgba(255, 107, 107, 0.1);
}

/* ===================================
   Accessibility Section
   =================================== */

.accessibility-section {
    margin-bottom: var(--spacing-xl);
}

.contrast-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contrast-card {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.contrast-sample {
    height: 60px;
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.contrast-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.contrast-ratio {
    font-family: monospace;
    font-weight: 700;
}

.contrast-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.contrast-badge.pass {
    background: rgba(76, 217, 100, 0.2);
    color: #4cd964;
}

.contrast-badge.fail {
    background: rgba(255, 59, 48, 0.2);
    color: #ff3b30;
}

/* ===================================
   Toast Notification
   =================================== */

.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(150%);
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    z-index: 1000;
    transition: transform var(--transition);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast i {
    color: var(--color-secondary);
}

/* ===================================
   Modal
   =================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    padding: var(--spacing-md);
}

.modal.show {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--color-surface);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow: auto;
    transform: scale(0.9);
    transition: transform var(--transition);
}

.modal.show .modal-content {
    transform: scale(1);
}

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

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--color-surface-light);
    color: var(--color-text);
}

.modal-body {
    padding: var(--spacing-lg);
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.export-btn {
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
}

.export-btn:hover {
    border-color: var(--color-primary);
    background: rgba(255, 107, 107, 0.1);
}

.export-btn i {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.export-preview {
    margin-top: var(--spacing-md);
}

#exportCode {
    width: 100%;
    min-height: 200px;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    color: var(--color-text);
    font-family: monospace;
    font-size: 0.875rem;
    resize: vertical;
}

/* ===================================
   Footer
   =================================== */

.footer {
    padding: var(--spacing-xl) 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
}

.footer kbd {
    font-family: monospace;
    background: var(--color-surface);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.footer i {
    color: var(--color-primary);
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
    .vibe-input-wrapper {
        flex-direction: column;
    }

    .vibe-input {
        width: 100%;
    }

    .btn-vibe-generate {
        width: 100%;
        justify-content: center;
    }

    .vibe-presets {
        justify-content: center;
    }

    .palette-grid {
        grid-template-columns: 1fr 1fr;
    }

    .controls-grid {
        grid-template-columns: 1fr;
    }

    .saved-grid {
        grid-template-columns: 1fr;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .palette-grid {
        grid-template-columns: 1fr;
    }

    .logo {
        font-size: 2rem;
    }

    .color-display {
        height: 150px;
    }
}

/* ===================================
   Utilities
   =================================== */

.hidden {
    display: none !important;
}

/* Focus styles */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: white;
}

::-moz-selection {
    background: var(--color-primary);
    color: white;
}