/* ============================================
   SKILL TREE DASHBOARD - CSS Styles
   ============================================ */

/* CSS Variables / Design Tokens */
:root {
    /* Colors - Cosmic Dark Theme */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252542;
    --bg-card: #1e1e35;
    --bg-card-hover: #262650;
    
    --text-primary: #f0f0ff;
    --text-secondary: #a0a0c0;
    --text-muted: #6b6b8d;
    
    --accent-primary: #7c3aed;
    --accent-primary-light: #a78bfa;
    --accent-primary-dark: #5b21b6;
    --accent-secondary: #06b6d4;
    --accent-tertiary: #f59e0b;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    /* Status Colors */
    --status-locked: #4b5563;
    --status-unlocked: #7c3aed;
    --status-in-progress: #f59e0b;
    --status-complete: #10b981;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    --gradient-xp: linear-gradient(90deg, var(--accent-tertiary) 0%, var(--accent-primary) 100%);
    --gradient-card: linear-gradient(180deg, rgba(124, 58, 237, 0.1) 0%, transparent 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.3);
    --shadow-glow-success: 0 0 20px rgba(16, 185, 129, 0.3);
    
    /* Borders */
    --border-color: rgba(124, 58, 237, 0.2);
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;
    
    /* Typography */
    --font-sans: 'Outfit', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 500;
    --z-toast: 600;
    --z-confetti: 700;
}

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================
   BASE STYLES
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at top, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Focus Styles */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary-dark);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--spacing-md);
    z-index: var(--z-modal);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--accent-primary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-md);
}

/* ============================================
   LAYOUT
   ============================================ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    max-width: 1600px;
    margin: 0 auto;
}

/* Brand */
.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.brand-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-glow);
}

.brand-icon svg {
    width: 28px;
    height: 28px;
    color: var(--text-primary);
}

.brand-text h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-tagline {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* User Stats */
.user-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.level-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.level-badge::before {
    content: '';
    position: absolute;
    inset: 2px;
    background: var(--bg-secondary);
    border-radius: calc(var(--border-radius-lg) - 2px);
}

/* Header LEVEL badge text must always be visible (do not share styles with card "level-number" chips) */
.level-badge .level-number,
#user-level {
    position: relative;
    z-index: 1;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--text-primary);
    background: none;
    -webkit-text-fill-color: currentColor;
}

.level-badge .level-label {
    z-index: 1;
}

.level-label {
    position: relative;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.xp-display {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 150px;
}

.xp-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.xp-text span:first-child {
    color: var(--accent-tertiary);
    font-weight: 700;
}

.xp-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.xp-fill {
    height: 100%;
    background: var(--gradient-xp);
    border-radius: var(--border-radius-full);
    transition: width var(--transition-slow);
    position: relative;
}

.xp-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, transparent 100%);
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Global Progress */
.global-progress {
    margin-top: var(--spacing-lg);
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.progress-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.progress-percentage {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--accent-success);
}

.progress-bar-container {
    position: relative;
}

.progress-bar {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-success) 0%, var(--accent-secondary) 100%);
    border-radius: var(--border-radius-full);
    transition: width var(--transition-slow);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
}

/* Search & Filters */
.search-filters {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
    align-items: center;
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    flex: 1;
    min-width: 250px;
    max-width: 400px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-xl);
    padding-left: calc(var(--spacing-md) + 28px);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

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

.search-box input:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.search-shortcut {
    position: absolute;
    right: var(--spacing-md);
    padding: 2px 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

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

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-select:hover {
    border-color: var(--accent-primary);
}

.filter-select:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
}

.btn-icon:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   BADGES BAR
   ============================================ */

.badges-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

.badges-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 1600px;
    margin: 0 auto;
    overflow-x: auto;
}

.badges-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.badges-list {
    display: flex;
    gap: var(--spacing-sm);
}

.badge-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.badge-item.earned {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.badge-item.earned .badge-icon {
    animation: badge-pulse 2s infinite;
}

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

.badge-icon {
    font-size: var(--font-size-base);
}

/* ============================================
   ZONES
   ============================================ */

.zones-container {
    display: grid;
    gap: var(--spacing-xl);
}

/* Grid View */
.zones-container.view-grid {
    grid-template-columns: 1fr;
}

/* List View */
.zones-container.view-list .zone-card {
    background: transparent;
    border: none;
    box-shadow: none;
}

.zones-container.view-list .zone-card .zone-header {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
}

/* Zone Card */
.zone-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.zone-card:hover {
    border-color: var(--accent-primary-dark);
}

.zone-card.expanded {
    box-shadow: var(--shadow-lg);
}

.zone-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.zone-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--zone-color, var(--accent-primary));
}

.zone-header:hover {
    background: var(--bg-card-hover);
}

.zone-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.zone-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--zone-color, var(--accent-primary)) 0%, rgba(255,255,255,0.1) 100%);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-2xl);
}

.zone-text {
    flex: 1;
}

.zone-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.zone-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.zone-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.zone-progress-ring {
    position: relative;
    width: 56px;
    height: 56px;
}

.zone-progress-ring svg {
    transform: rotate(-90deg);
}

.zone-progress-ring circle {
    fill: none;
    stroke-width: 4;
}

.zone-progress-ring .progress-bg {
    stroke: var(--bg-tertiary);
}

.zone-progress-ring .progress-value {
    stroke: var(--zone-color, var(--accent-primary));
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-slow);
}

.zone-progress-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-primary);
}

.zone-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.zone-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.zone-card.expanded .zone-toggle svg {
    transform: rotate(180deg);
}

.zone-toggle:hover {
    background: var(--accent-primary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

/* Zone Content */
.zone-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-normal);
}

.zone-card.expanded .zone-content {
    grid-template-rows: 1fr;
}

.zone-content-inner {
    overflow: hidden;
}

/* Levels Grid */
.levels-grid {
    display: grid;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-top: 0;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.view-list .levels-grid {
    grid-template-columns: 1fr;
}

/* Level Card */
.level-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    display: flex;
    gap: var(--spacing-md);
}

.level-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.level-card:focus-visible {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.level-card.status-locked {
    opacity: 0.6;
}

.level-card.status-locked:hover {
    transform: none;
    box-shadow: none;
}

.level-card.status-complete {
    border-color: var(--status-complete);
}

.level-card.status-complete::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, transparent 100%);
    pointer-events: none;
    border-radius: var(--border-radius-md);
}

.level-card.status-in-progress {
    border-color: var(--status-in-progress);
}

/* Level Status Toggle */
.level-status-toggle {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-full);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    transition: all var(--transition-fast);
}

.status-locked .level-status-toggle {
    background: var(--status-locked);
    border-color: var(--status-locked);
}

.status-locked .level-status-toggle svg {
    color: var(--text-muted);
}

.status-unlocked .level-status-toggle {
    border-color: var(--status-unlocked);
}

.status-in-progress .level-status-toggle {
    border-color: var(--status-in-progress);
    background: var(--status-in-progress);
}

.status-complete .level-status-toggle {
    background: var(--status-complete);
    border-color: var(--status-complete);
}

.level-status-toggle svg {
    width: 16px;
    height: 16px;
    color: var(--text-primary);
}

/* Level Info */
.level-info {
    flex: 1;
    min-width: 0;
}

.level-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.level-number {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--zone-color, var(--accent-primary));
    background: rgba(124, 58, 237, 0.2);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
}

.level-short {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Level Meta */
.level-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.level-xp {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--accent-tertiary);
    font-weight: 600;
}

.level-xp svg {
    width: 14px;
    height: 14px;
}

.level-hours {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.level-hours svg {
    width: 14px;
    height: 14px;
}

/* Hidden state for search/filter */
.level-card.hidden {
    display: none;
}

.zone-card.hidden {
    display: none;
}

/* ============================================
   LEVEL PANEL (Slide-over)
   ============================================ */

.level-panel {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    justify-content: flex-end;
}

.level-panel[hidden] {
    display: none;
}

.panel-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    animation: fade-in var(--transition-fast);
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.panel-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    animation: slide-in var(--transition-normal);
    overflow: hidden;
}

@keyframes slide-in {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

.panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.panel-title-group {
    flex: 1;
}

.panel-zone-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.panel-close {
    flex-shrink: 0;
}

.panel-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.panel-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-full);
}

.meta-item svg {
    width: 16px;
    height: 16px;
    color: var(--accent-tertiary);
}

.status-badge {
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
}

.status-badge.status-locked {
    color: var(--status-locked);
}

.status-badge.status-unlocked {
    color: var(--status-unlocked);
}

.status-badge.status-in-progress {
    color: var(--status-in-progress);
}

.status-badge.status-complete {
    color: var(--status-complete);
}

.panel-prereqs,
.panel-details,
.panel-notes,
.panel-journal {
    margin-bottom: var(--spacing-xl);
}

.panel-prereqs h3,
.panel-details h3,
.panel-notes h3,
.panel-journal h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.prereqs-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.prereqs-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.prereqs-list li.complete {
    color: var(--status-complete);
}

.prereqs-list li.complete::before {
    content: '✓';
    color: var(--status-complete);
}

.prereqs-list li.incomplete::before {
    content: '○';
    color: var(--text-muted);
}

.details-content {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.details-content p {
    margin-bottom: var(--spacing-md);
}

.details-content code {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
}

.panel-notes textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.panel-notes textarea:focus {
    border-color: var(--accent-primary);
}

.journal-entries {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    max-height: 200px;
    overflow-y: auto;
}

.journal-entry {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.journal-entry-time {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    white-space: nowrap;
}

.journal-entry-text {
    color: var(--text-secondary);
    flex: 1;
}

.journal-add {
    display: flex;
    gap: var(--spacing-sm);
}

.journal-add input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.journal-add input:focus {
    border-color: var(--accent-primary);
}

.panel-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
}

.panel-footer .btn {
    width: 100%;
}

/* ============================================
   MODALS
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    animation: fade-in var(--transition-fast);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 480px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    animation: modal-pop var(--transition-normal);
}

@keyframes modal-pop {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.modal-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.modal-body {
    padding: var(--spacing-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* Shortcuts Modal */
.shortcut-group {
    margin-bottom: var(--spacing-lg);
}

.shortcut-group:last-child {
    margin-bottom: 0;
}

.shortcut-group h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.shortcut-item kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.toggle-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

/* Import Modal */
.file-input-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl);
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.file-input-label:hover {
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
}

.file-input-label svg {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
}

.file-input-label span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.import-preview {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-md);
}

.import-preview h3 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.preview-stats {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.conflict-resolution {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.conflict-resolution h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-warning);
    margin-bottom: var(--spacing-sm);
}

.conflict-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.conflict-options label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.conflict-options input[type="radio"] {
    accent-color: var(--accent-primary);
}

/* ============================================
   TOAST
   ============================================ */

.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--accent-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-glow);
    animation: toast-slide-up var(--transition-normal);
}

.toast[hidden] {
    display: none;
}

@keyframes toast-slide-up {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.toast-icon {
    font-size: var(--font-size-2xl);
}

.toast-content {
    display: flex;
    flex-direction: column;
}

.toast-content strong {
    font-size: var(--font-size-sm);
    color: var(--accent-primary);
}

.toast-content span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ============================================
   LEVEL UP ANIMATION
   ============================================ */

.levelup-container {
    position: fixed;
    inset: 0;
    z-index: var(--z-toast);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.levelup-container[hidden] {
    display: none;
}

.levelup-content {
    text-align: center;
    animation: levelup-pop 0.6s ease-out;
}

@keyframes levelup-pop {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.levelup-icon {
    font-size: 80px;
    animation: levelup-spin 1s ease-out;
}

@keyframes levelup-spin {
    from { transform: rotate(-20deg); }
    to { transform: rotate(360deg); }
}

.levelup-text {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: var(--spacing-md) 0;
}

.levelup-level {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--text-primary);
}

/* ============================================
   CONFETTI
   ============================================ */

#confetti-canvas {
    position: fixed;
    inset: 0;
    z-index: var(--z-confetti);
    pointer-events: none;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1600px;
    margin: 0 auto;
}

.streak-counter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-tertiary);
}

.streak-counter svg {
    width: 20px;
    height: 20px;
}

.footer-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.footer-stats span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .brand {
        justify-content: center;
    }
    
    .user-stats {
        justify-content: center;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .search-filters {
        flex-direction: column;
    }
    
    .search-box {
        max-width: none;
    }
    
    .action-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .levels-grid {
        grid-template-columns: 1fr;
    }
    
    .panel-content {
        max-width: none;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
    }
    
    .header {
        padding: var(--spacing-md);
    }
    
    .brand-icon {
        width: 40px;
        height: 40px;
    }
    
    .brand-text h1 {
        font-size: var(--font-size-lg);
    }
    
    .level-badge {
        width: 52px;
        height: 52px;
    }
    
    .level-number {
        font-size: var(--font-size-xl);
    }
    
    .zone-header {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .zone-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .level-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .level-status-toggle {
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .panel-footer {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-stats {
        justify-content: center;
    }
}

/* Large screens */
@media (min-width: 1366px) {
    .zones-container.view-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .levels-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

/* Print styles */
@media print {
    .header-actions,
    .action-buttons,
    .panel-footer,
    .skip-link,
    #confetti-canvas {
        display: none !important;
    }
    
    .zone-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .zone-content {
        grid-template-rows: 1fr !important;
    }
    
    body {
        background: white;
        color: black;
    }
}