/* ========================================
   GitHub Profile Card Generator - Styles
   ======================================== */

/* CSS Custom Properties for Theming */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: rgba(22, 27, 34, 0.8);
    --border-color: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-primary: #238636;
    --accent-secondary: #58a6ff;
    --accent-tertiary: #bc8cff;
    --gradient-start: #238636;
    --gradient-end: #58a6ff;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --glow-color: rgba(35, 134, 54, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --bg-card: rgba(255, 255, 255, 0.9);
    --border-color: #d0d7de;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8c959f;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(35, 134, 54, 0.2);
}

/* Ocean Theme */
[data-theme="ocean"] {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-tertiary: #1d3461;
    --bg-card: rgba(17, 34, 64, 0.9);
    --border-color: #233554;
    --accent-primary: #64ffda;
    --accent-secondary: #57cbff;
    --accent-tertiary: #bd93f9;
    --gradient-start: #64ffda;
    --gradient-end: #57cbff;
    --glow-color: rgba(100, 255, 218, 0.2);
}

/* Forest Theme */
[data-theme="forest"] {
    --bg-primary: #1a1f16;
    --bg-secondary: #252b1f;
    --bg-tertiary: #323a29;
    --bg-card: rgba(37, 43, 31, 0.9);
    --border-color: #3d4731;
    --accent-primary: #7cb342;
    --accent-secondary: #aed581;
    --accent-tertiary: #c5e1a5;
    --gradient-start: #7cb342;
    --gradient-end: #aed581;
    --glow-color: rgba(124, 179, 66, 0.2);
}

/* Reset & Base Styles */
*, *::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', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: 
        radial-gradient(ellipse at top left, var(--glow-color), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(88, 166, 255, 0.1), transparent 50%),
        var(--bg-primary);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.github-icon {
    color: var(--text-primary);
    transition: transform var(--transition-normal);
}

.logo:hover .github-icon {
    transform: rotate(360deg);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Theme Selector */
.theme-selector {
    display: flex;
    gap: var(--spacing-sm);
}

.theme-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    border: 2px solid var(--border-color);
    background: transparent;
    cursor: pointer;
    padding: 4px;
    transition: all var(--transition-fast);
}

.theme-btn:hover {
    transform: scale(1.1);
    border-color: var(--accent-primary);
}

.theme-btn.active {
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px var(--glow-color);
}

.theme-preview {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
}

.theme-preview.dark {
    background: linear-gradient(135deg, #0d1117, #238636);
}

.theme-preview.light {
    background: linear-gradient(135deg, #ffffff, #238636);
}

.theme-preview.ocean {
    background: linear-gradient(135deg, #0a192f, #64ffda);
}

.theme-preview.forest {
    background: linear-gradient(135deg, #1a1f16, #7cb342);
}

/* Search Section */
.search-section {
    padding: var(--spacing-2xl) var(--spacing-xl);
    background: linear-gradient(180deg, var(--bg-secondary), transparent);
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px var(--shadow-color);
}

.search-input-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 4px 30px var(--shadow-color), 0 0 0 3px var(--glow-color);
}

.search-icon {
    color: var(--text-muted);
    margin: 0 var(--spacing-md);
    flex-shrink: 0;
}

#username-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    padding: var(--spacing-md);
    outline: none;
}

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

.search-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow-color);
}

.search-btn:active {
    transform: translateY(0);
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

.search-btn:hover .btn-arrow {
    transform: translateX(4px);
}

.search-hint {
    margin-top: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.hint-username {
    color: var(--accent-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.hint-username:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Error Message */
.error-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(248, 81, 73, 0.15);
    border: 1px solid #f85149;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: #f85149;
    margin-bottom: var(--spacing-lg);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* Loading State */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

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

/* Profile Card */
.profile-card {
    width: 100%;
    max-width: 700px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 40px var(--shadow-color);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Header */
.card-header {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

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

.avatar {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    border: 4px solid var(--accent-primary);
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.avatar:hover {
    transform: scale(1.05);
}

.avatar-glow {
    position: absolute;
    inset: -4px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    opacity: 0.3;
    filter: blur(20px);
    z-index: -1;
}

.user-info {
    flex: 1;
}

.name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--text-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.login::before {
    content: '@';
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-color);
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-secondary);
    margin-bottom: var(--spacing-xs);
}

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

/* User Meta */
.user-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.meta-item svg {
    color: var(--text-muted);
}

.meta-link {
    color: var(--accent-secondary);
    text-decoration: none;
}

.meta-link:hover {
    text-decoration: underline;
}

/* Section Title */
.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
    border-radius: 2px;
}

/* Languages Chart */
.languages-section {
    margin-bottom: var(--spacing-xl);
}

.languages-chart {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.language-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.language-bar:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.language-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.language-name {
    color: var(--text-primary);
    font-weight: 500;
}

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

/* Repos Grid */
.repos-section {
    margin-bottom: var(--spacing-lg);
}

.repos-grid {
    display: grid;
    gap: var(--spacing-md);
}

.repo-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    text-decoration: none;
    color: inherit;
    display: block;
}

.repo-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(4px);
    box-shadow: -4px 0 0 var(--accent-primary);
}

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

.repo-icon {
    color: var(--text-muted);
}

.repo-name {
    font-weight: 600;
    color: var(--accent-secondary);
}

.repo-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.repo-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.repo-stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

.repo-stat svg {
    width: 14px;
    height: 14px;
}

/* Card Footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

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

.export-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.export-btn:hover {
    border-color: var(--accent-primary);
    background: var(--accent-primary);
    color: white;
}

/* App Footer */
.app-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    text-align: center;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.app-footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.app-footer a {
    color: var(--accent-secondary);
    text-decoration: none;
}

.app-footer a:hover {
    text-decoration: underline;
}

.rate-limit {
    font-size: 0.75rem !important;
    margin-top: var(--spacing-xs);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .search-input-wrapper {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .search-icon {
        display: none;
    }
    
    #username-input {
        width: 100%;
        text-align: center;
    }
    
    .search-btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .card-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .avatar {
        width: 100px;
        height: 100px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .user-meta {
        justify-content: center;
    }
    
    .card-footer {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .logo h1 {
        font-size: 1rem;
    }
    
    .profile-card {
        padding: var(--spacing-md);
    }
    
    .name {
        font-size: 1.5rem;
    }
}