/* ============================================
   AI Banner Generator - Main Styles
   Design System: Liquid Glass + Neon Accents
   ============================================ */

/* CSS Variables */
:root {
    /* Base Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #1a1a2e;
    --color-bg-tertiary: #2d2d44;
    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-hover: rgba(255, 255, 255, 0.06);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.4);

    /* Neon Accents */
    --neon-cyan: #00f5ff;
    --neon-magenta: #ff00ff;
    --neon-lime: #39ff14;
    --neon-orange: #ff6b35;
    --neon-purple: #a855f7;

    /* Element Colors */
    --element-logo: #00f5ff;
    --element-text: #ff00ff;
    --element-good: #39ff14;
    --element-custom: #ff6b35;
    --element-composition: #a855f7;

    /* Typography */
    --font-heading: 'Orbitron', sans-serif;
    --font-ui: 'JetBrains Mono', monospace;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-Index */
    --z-canvas: 1;
    --z-elements: 10;
    --z-selected: 20;
    --z-drawing: 100;
    --z-toolbar: 200;
    --z-modal: 500;
    --z-toast: 1000;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* App Container */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: var(--space-md);
    gap: var(--space-md);
}

/* Glass Panel Effect */
.glass-panel {
    background: rgba(26, 26, 46, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 
        0 4px 30px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.glass-panel-light {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
}

/* Neon Text Effect */
.neon-text {
    text-shadow: 
        0 0 5px currentColor,
        0 0 20px currentColor,
        0 0 40px currentColor;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
}

.header-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--neon-cyan);
    letter-spacing: 0.05em;
}

.header-actions {
    display: flex;
    gap: var(--space-sm);
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 200px 1fr 220px;
    gap: var(--space-md);
    flex: 1;
    min-height: 0;
}

/* Toolbars */
.toolbar {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    overflow-y: auto;
}

.toolbar-title {
    font-family: var(--font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.toolbar-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-sm) 0;
}

.tool-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.tool-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--element-color, var(--color-border));
    border-radius: var(--radius-md);
    color: var(--element-color, var(--color-text-primary));
    font-family: var(--font-ui);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.tool-btn:hover {
    background: rgba(var(--element-color-rgb, 255, 255, 255), 0.1);
    transform: translateX(4px);
    box-shadow: 0 0 20px rgba(var(--element-color-rgb, 255, 255, 255), 0.2);
}

.tool-btn.active {
    background: rgba(var(--element-color-rgb, 255, 255, 255), 0.15);
    box-shadow: 
        0 0 0 2px var(--element-color, var(--neon-cyan)),
        0 0 20px rgba(var(--element-color-rgb, 0, 245, 255), 0.3);
}

.tool-icon {
    font-size: 1.2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-ui);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-icon {
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.4);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--neon-cyan);
}

.btn-accent {
    background: linear-gradient(135deg, var(--neon-magenta), var(--neon-orange));
    color: white;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 0, 255, 0.4);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
}

.btn-generate .sparkle {
    animation: pulse-glow 1.5s ease-in-out infinite;
}

/* Project Info */
.project-info {
    margin-bottom: var(--space-sm);
}

.project-name-input {
    width: 100%;
    padding: var(--space-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: 0.875rem;
}

.project-name-input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
}

/* Versions List */
.versions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    max-height: 200px;
    overflow-y: auto;
}

.version-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.version-item:hover {
    background: var(--color-surface-hover);
}

.version-item.current {
    border-left: 3px solid var(--neon-cyan);
}

.version-badge {
    background: var(--neon-purple);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
}

.version-name {
    flex: 1;
    color: var(--color-text-secondary);
}

.version-time {
    color: var(--color-text-muted);
    font-size: 0.65rem;
}

/* Layers List */
.layers-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.layer-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

.layer-icon {
    font-size: 1rem;
}

.layer-name {
    flex: 1;
    color: var(--color-text-secondary);
}

.layer-visibility {
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.layer-visibility:hover {
    opacity: 1;
}

.layer-visibility.hidden {
    opacity: 0.2;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--neon-cyan);
}

/* Inputs */
input[type="number"],
input[type="text"] {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: 0.875rem;
    padding: var(--space-xs) var(--space-sm);
}

input[type="number"] {
    width: 80px;
    text-align: center;
}

input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
}

/* Animations */
@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Selection */
::selection {
    background: var(--neon-cyan);
    color: var(--color-bg-primary);
}