/* ============================================
   GitHub Stats Visualizer - Purple Neon Theme
   ============================================ */

:root {
    /* Primary Colors */
    --primary: #bf5af2;
    --primary-dark: #9b4dca;
    --primary-light: #d98aff;
    --primary-glow: rgba(191, 90, 242, 0.4);
    
    /* Background Colors */
    --bg-primary: #0d0d0d;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    /* Accent Colors */
    --accent-green: #30d158;
    --accent-blue: #0a84ff;
    --accent-orange: #ff9f0a;
    --accent-red: #ff453a;
    --accent-yellow: #ffd60a;
    --accent-cyan: #64d2ff;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Glow Effect */
.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 20%, rgba(191, 90, 242, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(155, 77, 202, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    font-size: 2.5rem;
    color: var(--primary);
    text-shadow: 0 0 20px var(--primary-glow);
    animation: pulse-glow 2s ease-in-out infinite;
}

.logo-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.75rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md) var(--spacing-xl);
}

/* Search Section */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-box {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 500px;
    margin: 0 auto;
}

#username-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-family: 'JetBrains Mono', monospace;
    background: var(--bg-card);
    border: 2px solid var(--bg-card-hover);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition-normal);
}

#username-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

#username-input::placeholder {
    color: var(--text-muted);
}

.fetch-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-width: 140px;
}

.fetch-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.fetch-button:active:not(:disabled) {
    transform: translateY(0);
}

.fetch-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loader {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error Message */
.error-message {
    max-width: 500px;
    margin: var(--spacing-md) auto 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 69, 58, 0.1);
    border: 1px solid var(--accent-red);
    border-radius: var(--radius-md);
    color: var(--accent-red);
    text-align: center;
    font-size: 0.9rem;
}

/* Dashboard Grid */
.dashboard {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-normal);
}

.card:hover {
    border-color: rgba(191, 90, 242, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card-header {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-light);
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Profile Card - Full Width */
.profile-card {
    grid-column: 1 / -1;
}

.profile-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.profile-avatar-wrapper {
    position: relative;
    flex-shrink: 0;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    border: 3px solid var(--primary);
    object-fit: cover;
}

.avatar-glow {
    position: absolute;
    inset: -4px;
    border-radius: var(--radius-full);
    background: var(--primary);
    opacity: 0.3;
    filter: blur(15px);
    z-index: -1;
}

.profile-info {
    flex: 1;
    min-width: 200px;
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.profile-login {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.profile-login:hover {
    color: var(--primary-light);
    text-shadow: 0 0 10px var(--primary-glow);
}

.profile-bio {
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

.profile-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    min-width: 70px;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Repos Card */
.repos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.repo-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
    text-decoration: none;
    color: inherit;
}

.repo-item:hover {
    background: var(--bg-card-hover);
    transform: translateX(4px);
}

.repo-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--primary-light);
    font-weight: 500;
}

.repo-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.repo-stats {
    display: flex;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.repo-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.repo-stat.stars {
    color: var(--accent-yellow);
}

.repo-stat.forks {
    color: var(--accent-cyan);
}

/* Chart Containers */
.chart-container {
    position: relative;
    height: 200px;
    margin-bottom: var(--spacing-sm);
}

.chart-container-bar {
    height: 180px;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs) var(--spacing-md);
    justify-content: center;
    padding-top: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}

.chart-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
}

/* Contributions Card - Full Width */
.contributions-card {
    grid-column: 1 / -1;
}

.contributions-wrapper {
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
}

.contributions-graph {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    filter: hue-rotate(280deg) saturate(1.5);
}

/* Graph error fallback */
.graph-error {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: var(--spacing-lg) var(--spacing-md);
    font-style: italic;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, 
        var(--bg-secondary) 25%, 
        var(--bg-card-hover) 50%, 
        var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

.skeleton-circle {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.skeleton-line {
    height: 20px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-line.short {
    width: 60%;
}

.skeleton-rect {
    height: 150px;
}

.skeleton-card {
    min-height: 200px;
}

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

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer a:hover {
    color: var(--primary-light);
}

.heart {
    color: var(--accent-red);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.footer-note {
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .profile-content {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-info {
        min-width: 100%;
    }
    
    .profile-stats {
        justify-content: center;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .fetch-button {
        width: 100%;
    }
    
    .repo-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .repo-stats {
        margin-top: var(--spacing-xs);
    }
    
    .header {
        padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-md);
    }
    
    .logo-text {
        font-size: 1.4rem;
    }
    
    .logo-icon {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .profile-avatar {
        width: 80px;
        height: 80px;
    }
    
    .stat-value {
        font-size: 1.25rem;
    }
    
    .profile-stats {
        gap: var(--spacing-md);
    }
}

/* Chart.js Custom Styling */
.chart-container canvas {
    max-width: 100%;
}