:root {
    /* GitHub Dark Theme Colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    --bg-overlay: #21262d;
    --bg-hover: #30363d;
    --bg-active: #282e36;
    
    /* Text Colors */
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;
    --text-link: #58a6ff;
    --text-link-hover: #79c0ff;
    
    /* Accent Colors */
    --accent-blue: #58a6ff;
    --accent-blue-dark: #1f6feb;
    --accent-purple: #bc8cff;
    --accent-purple-dark: #8b5cf6;
    --accent-green: #3fb950;
    --accent-red: #f85149;
    --accent-orange: #ff8c42;
    
    /* Border Colors */
    --border-default: #30363d;
    --border-muted: #21262d;
    --border-emphasis: #6e7681;
    
    /* Fonts */
    --font-display: 'Archivo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-default);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    animation: slideDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-blue);
    filter: drop-shadow(0 0 8px rgba(88, 166, 255, 0.3));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.header-actions {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.3s both;
}

.btn-settings {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-settings:hover {
    background: var(--bg-hover);
    border-color: var(--border-emphasis);
    transform: translateY(-1px);
}

.btn-settings svg {
    width: 16px;
    height: 16px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(1, 4, 9, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease-out;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

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

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

/* Input Section */
.input-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-default);
    background: var(--bg-tertiary);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue);
    animation: expandWidth 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes expandWidth {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

.tab-content {
    display: none;
    padding: var(--spacing-xl);
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Form Elements */
.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

.input-with-icon {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-tertiary);
}

input[type="text"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: var(--spacing-md);
    padding-left: var(--spacing-2xl);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.input-group input[type="text"],
.input-group input[type="password"] {
    padding-left: var(--spacing-2xl);
}

#commitsPerPage {
    padding-left: var(--spacing-md);
}

input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

input::placeholder {
    color: var(--text-tertiary);
}

small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-blue-dark);
    border: 1px solid transparent;
    border-radius: 6px;
    color: white;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-primary:hover,
.btn-secondary:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(88, 166, 255, 0.3);
}

.btn-primary:active,
.btn-secondary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.btn-large {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
}

.btn-large svg {
    width: 18px;
    height: 18px;
}

/* Compare Inputs */
.compare-inputs {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    align-items: end;
    margin-bottom: var(--spacing-lg);
}

.compare-arrow {
    padding-bottom: var(--spacing-md);
    color: var(--text-tertiary);
}

.compare-arrow svg {
    width: 24px;
    height: 24px;
}

.compare-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.dot-notation {
    font-family: var(--font-mono);
    font-weight: 600;
    background: var(--bg-overlay);
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: var(--spacing-sm);
}

/* Error Message */
.error-message {
    display: none;
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--accent-red);
    border-radius: 6px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--accent-red);
    font-size: 0.875rem;
    animation: shake 0.5s ease-in-out;
}

.error-message.active {
    display: block;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Loading State */
.loading-state {
    display: none;
    text-align: center;
    padding: var(--spacing-2xl);
}

.loading-state.active {
    display: block;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-default);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* User Profile */
.user-profile-section {
    animation: fadeIn 0.5s ease-out;
}

.profile-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.profile-header {
    display: flex;
    gap: var(--spacing-lg);
    align-items: start;
    margin-bottom: var(--spacing-lg);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--border-emphasis);
}

.profile-info h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.profile-username {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.profile-bio {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-blue);
}

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

.profile-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.profile-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-link);
    text-decoration: none;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
}

.profile-link:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}

.profile-link svg {
    width: 14px;
    height: 14px;
}

.repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.repo-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.repo-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.repo-name {
    font-weight: 600;
    color: var(--text-link);
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
}

.repo-description {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.repo-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

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

.lang-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

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

/* Repo Info */
.repo-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.5s ease-out;
}

.repo-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
}

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

.repo-title svg {
    width: 24px;
    height: 24px;
    color: var(--text-tertiary);
}

.repo-title h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.repo-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border-default);
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.detail-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Selection Area */
.selection-area {
    animation: fadeIn 0.5s ease-out;
}

.selection-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.selection-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.badge-info {
    display: flex;
    gap: var(--spacing-sm);
}

.badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
}

.badge-a {
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.badge-b {
    background: rgba(188, 140, 255, 0.15);
    color: var(--accent-purple);
    border: 1px solid var(--accent-purple);
}

.btn-reset {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.btn-reset:hover {
    background: var(--bg-hover);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.btn-reset svg {
    width: 14px;
    height: 14px;
}

/* Commits Container */
.commits-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.commits-list {
    max-height: 600px;
    overflow-y: auto;
}

/* Custom Scrollbar */
.commits-list::-webkit-scrollbar {
    width: 8px;
}

.commits-list::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.commits-list::-webkit-scrollbar-thumb {
    background: var(--border-emphasis);
    border-radius: 4px;
}

.commits-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Commit Item */
.commit-item {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-default);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    animation: fadeInSlide 0.3s ease-out backwards;
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.commit-item:hover {
    background: var(--bg-hover);
}

.commit-item:last-child {
    border-bottom: none;
}

.commit-item.selected-a {
    background: rgba(88, 166, 255, 0.1);
    border-left: 3px solid var(--accent-blue);
    padding-left: calc(var(--spacing-lg) - 3px);
}

.commit-item.selected-b {
    background: rgba(188, 140, 255, 0.1);
    border-left: 3px solid var(--accent-purple);
    padding-left: calc(var(--spacing-lg) - 3px);
}

.commit-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.commit-message {
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    line-height: 1.4;
}

.commit-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.625rem;
    font-weight: 700;
    font-family: var(--font-mono);
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.commit-badge.badge-a {
    background: var(--accent-blue);
    color: white;
}

.commit-badge.badge-b {
    background: var(--accent-purple);
    color: white;
}

.commit-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    flex-wrap: wrap;
}

.commit-hash {
    font-family: var(--font-mono);
    color: var(--text-link);
}

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

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

/* Load More Button */
.btn-load-more {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 0 0 12px 12px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-load-more:hover {
    background: var(--bg-hover);
    color: var(--accent-blue);
}

/* Action Buttons */
.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    animation: fadeIn 0.5s ease-out;
}

.btn-diff {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 2px solid var(--border-default);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.btn-diff:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.btn-two-dot {
    border-color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.05);
}

.btn-two-dot:hover {
    background: rgba(88, 166, 255, 0.1);
    border-color: var(--accent-blue);
    box-shadow: 0 8px 24px rgba(88, 166, 255, 0.3);
}

.btn-three-dot {
    border-color: var(--accent-purple);
    background: rgba(188, 140, 255, 0.05);
}

.btn-three-dot:hover {
    background: rgba(188, 140, 255, 0.1);
    border-color: var(--accent-purple);
    box-shadow: 0 8px 24px rgba(188, 140, 255, 0.3);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.btn-notation {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 6px;
}

.btn-two-dot .btn-notation {
    background: var(--accent-blue);
    color: white;
}

.btn-three-dot .btn-notation {
    background: var(--accent-purple);
    color: white;
}

.btn-label {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.btn-diff small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-default);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

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

.footer-left a {
    color: var(--text-link);
    text-decoration: none;
    font-weight: 500;
}

.footer-left a:hover {
    color: var(--text-link-hover);
    text-decoration: underline;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.github-link:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.github-link svg {
    width: 18px;
    height: 18px;
}

.star-text {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn.active::after {
        height: 100%;
        width: 3px;
        left: 0;
        right: auto;
        top: 0;
    }
    
    .compare-inputs {
        grid-template-columns: 1fr;
    }
    
    .compare-arrow {
        display: none;
    }
    
    .compare-actions {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-right {
        flex-direction: column;
    }
    
    .profile-header {
        flex-direction: column;
    }
    
    .repos-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .selection-header {
        flex-direction: column;
        align-items: start;
    }
    
    .selection-badges {
        flex-direction: column;
        align-items: start;
        width: 100%;
    }
    
    .badge-info {
        flex-direction: column;
        width: 100%;
    }
    
    .badge {
        width: 100%;
        text-align: center;
    }
}