/* Design Judge - CSS
   A clean, light design aesthetic */

/* ============================================
   CSS Variables & Theme
   ============================================ */
:root {
    /* Color palette - clean white theme */
    --color-bg: #ffffff;
    --color-bg-elevated: #fafafa;
    --color-bg-card: #ffffff;
    --color-bg-secondary: #fafafa;
    --color-surface: #f3f4f6;
    --color-primary: rgb(207, 76, 16);
    --color-primary-light: rgba(207, 76, 16, 0.1);
    --color-warning: #ea580c;
    
    --color-text: #1a1a1a;
    --color-text-secondary: #4b5563;
    --color-text-muted: #9ca3af;
    
    --color-accent: rgb(207, 76, 16);
    --color-accent-dim: rgb(180, 66, 14);
    --color-accent-light: rgba(207, 76, 16, 0.1);
    
    --color-critical: #dc2626;
    --color-major: #ea580c;
    --color-minor: #2563eb;
    --color-success: #16a34a;
    
    /* Score colors */
    --color-score-low: #dc2626;
    --color-score-mid: #ea580c;
    --color-score-high: #16a34a;
    
    /* Typography */
    --font-serif: 'PT Root UI VF', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-sans: 'PT Root UI VF', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Borders */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease-out;
    
    /* Border color for light theme */
    --color-border: #e5e7eb;
}

/* ============================================
   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-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   App Layout
   ============================================ */
.app {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Background decorations */
.bg-gradient {
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(207, 76, 16, 0.04) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(207, 76, 16, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.bg-grid {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: relative;
    z-index: 10;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

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

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.tagline {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    padding-left: var(--space-lg);
    border-left: 1px solid var(--color-border);
}

/* Logout button in header */
.logout-btn {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    border-color: var(--color-critical);
    color: var(--color-critical);
}

/* ============================================
   Login Section
   ============================================ */
.login-section {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: var(--space-xl);
}

.login-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 420px;
    width: 100%;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    text-align: center;
    animation: fadeIn 0.6s ease-out;
}

.login-header {
    margin-bottom: var(--space-xl);
}

.login-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-md);
}

.login-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.login-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.login-form {
    max-width: 100%;
}

.login-form .input-wrapper {
    flex-direction: column;
    gap: var(--space-sm);
}

.login-form .input-wrapper input {
    width: 100%;
    text-align: center;
    padding: var(--space-md);
}

.login-form .input-wrapper button {
    width: 100%;
    justify-content: center;
}

.login-form .input-icon {
    display: none;
}

/* Responsive adjustments for login */
@media (max-width: 768px) {
    .login-card {
        padding: var(--space-xl);
    }
    
    .login-title {
        font-size: 1.5rem;
    }
}

/* ============================================
   Main Content
   ============================================ */
.main {
    position: relative;
    z-index: 10;
    flex: 1;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
}

/* ============================================
   Input Section
   ============================================ */
.input-section {
    text-align: center;
    padding: var(--space-3xl) 0;
    animation: fadeIn 0.6s ease-out;
}

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

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.hero-title em {
    font-style: normal;
    font-weight: 700;
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

/* URL Form */
.url-form {
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xs);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.input-wrapper:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(207, 76, 16, 0.1);
}

.input-icon {
    padding: 0 var(--space-md);
    font-size: 1.125rem;
    opacity: 0.6;
}

.input-wrapper input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 1rem;
    padding: var(--space-md) 0;
    outline: none;
}

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

.input-wrapper button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-accent);
    color: #ffffff !important;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.login-btn-text {
    color: #ffffff !important;
    font-weight: 600;
}

.input-wrapper button:hover:not(:disabled) {
    background: var(--color-accent-dim);
    transform: translateX(2px);
}

.input-wrapper button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.input-wrapper button:hover:not(:disabled) .btn-icon {
    transform: translateX(3px);
}

.input-error {
    color: var(--color-critical);
    font-size: 0.875rem;
    margin-top: var(--space-sm);
    min-height: 1.25rem;
}

/* Features */
.features {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.feature-icon {
    font-size: 1.125rem;
}

/* ============================================
   Progress Section
   ============================================ */
.progress-section {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-3xl) 0;
}

.progress-card {
    text-align: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 400px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.progress-spinner {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-lg);
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.progress-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-sm);
}

.progress-message {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.progress-bar {
    height: 4px;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-fill {
    height: 100%;
    width: 30%;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    animation: progress-pulse 2s ease-in-out infinite;
}

@keyframes progress-pulse {
    0%, 100% { width: 30%; opacity: 1; }
    50% { width: 70%; opacity: 0.8; }
}

.progress-url {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    word-break: break-all;
}

.cancel-btn {
    margin-top: var(--space-lg);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cancel-btn:hover {
    border-color: var(--color-critical);
    color: var(--color-critical);
}

/* ============================================
   Results Section
   ============================================ */
.results-section {
    animation: fadeIn 0.6s ease-out;
}

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

.back-btn,
.download-btn {
    display: inline-flex !important;
    align-items: center;
    gap: var(--space-sm);
    justify-content: center;
}

/* Analyzed URL Card */
.analyzed-url-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-xl);
}

.analyzed-url-label {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
}

.analyzed-url-link {
    color: var(--color-accent);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    word-break: break-all;
    transition: color var(--transition-fast);
}

.analyzed-url-link:hover {
    color: var(--color-accent-dim);
    text-decoration: underline;
}

/* Score Card */
.score-card {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.score-ring {
    position: relative;
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

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

.score-ring-bg {
    fill: none;
    stroke: var(--color-surface);
    stroke-width: 8;
}

.score-ring-fill {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 339.292;
    stroke-dashoffset: 339.292;
    transition: stroke-dashoffset 1s ease-out, stroke 0.5s ease;
}

.score-value {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
}

.score-details {
    flex: 1;
}

.score-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.score-summary {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text);
}

/* Usage Card */
.usage-card {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-surface) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.usage-title {
    font-family: var(--font-serif);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.usage-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.usage-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

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

.usage-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

.usage-cost .usage-value {
    color: var(--color-success);
    font-weight: 600;
}

/* Categories Card */
.categories-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 400;
    margin-bottom: var(--space-lg);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast);
}

.category-item:hover {
    transform: translateY(-2px);
}

.category-name {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.category-score {
    font-weight: 600;
    font-size: 1rem;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    min-width: 40px;
    text-align: center;
}

.category-score.score-low {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-critical);
}

.category-score.score-mid {
    background: rgba(207, 76, 16, 0.1);
    color: var(--color-accent);
}

.category-score.score-high {
    background: rgba(22, 163, 74, 0.1);
    color: var(--color-success);
}

/* Issues Card */
.issues-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.issues-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.issue-tab {
    background: var(--color-surface);
    border: none;
    color: var(--color-text-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.issue-tab:hover {
    color: var(--color-text);
}

.issue-tab.active {
    color: var(--color-bg);
}

.issue-tab.active[data-severity="critical"] {
    background: var(--color-critical);
}

.issue-tab.active[data-severity="major"] {
    background: var(--color-major);
}

.issue-tab.active[data-severity="minor"] {
    background: var(--color-minor);
}

.issue-count {
    font-weight: 600;
}

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

.issue-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
}

.issue-page {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.issue-text {
    flex: 1;
}

.issue-category {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    flex-shrink: 0;
}

.issues-empty {
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--space-lg);
}

/* Notes Card */
.notes-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

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

.note-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.note-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.note-header:hover {
    background: rgba(255, 255, 255, 0.03);
}

.note-title {
    font-size: 0.9375rem;
    font-weight: 500;
}

.note-toggle {
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.note-item.open .note-toggle {
    transform: rotate(180deg);
}

.note-content {
    padding: 0 var(--space-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.note-item.open .note-content {
    padding: 0 var(--space-md) var(--space-md);
    max-height: 500px;
}

.note-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Error Section
   ============================================ */
.error-section {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-3xl) 0;
}

.error-card {
    text-align: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-critical);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 400px;
    width: 100%;
}

.error-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--space-md);
}

.error-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: var(--space-sm);
}

.error-message {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.retry-btn {
    background: var(--color-accent);
    color: var(--color-bg);
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.retry-btn:hover {
    background: var(--color-text);
}

/* ============================================
   History Section
   ============================================ */
.history-section {
    margin-top: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    animation: fadeIn 0.4s ease-out;
}

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

.history-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--color-text);
}

.clear-history-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.clear-history-btn:hover {
    border-color: var(--color-critical);
    color: var(--color-critical);
}

.history-table-wrapper {
    overflow-x: auto;
    margin: 0 calc(-1 * var(--space-md));
    padding: 0 var(--space-md);
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.history-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border);
}

.history-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-surface);
}

.history-table tbody tr {
    cursor: pointer;
    transition: background var(--transition-fast);
}

.history-table tbody tr:hover {
    background: var(--color-surface);
}

.history-table tbody tr:last-child td {
    border-bottom: none;
}

.history-url {
    color: var(--color-text);
    font-weight: 500;
    word-break: break-all;
}

.history-score {
    display: inline-block;
    font-weight: 600;
    font-size: 0.875rem;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    min-width: 44px;
    text-align: center;
}

.history-score.score-low {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-critical);
}

.history-score.score-mid {
    background: rgba(207, 76, 16, 0.1);
    color: var(--color-accent);
}

.history-score.score-high {
    background: rgba(22, 163, 74, 0.1);
    color: var(--color-success);
}

.history-cost {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    font-variant-numeric: tabular-nums;
}

.history-date {
    color: var(--color-text-secondary);
    white-space: nowrap;
    font-size: 0.875rem;
}

/* Description column */
.col-description {
    min-width: 180px;
    max-width: 250px;
}

.history-description-input {
    width: 100%;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text);
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.history-description-input::placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}

.history-description-input:hover {
    background: var(--color-surface);
    border-color: var(--color-border);
}

.history-description-input:focus {
    outline: none;
    background: var(--color-bg-card);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(207, 76, 16, 0.1);
}

.history-empty {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-xl);
    font-size: 0.9375rem;
}

/* History controls and selection */
.history-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding: 0 var(--space-xs);
}

.history-selection-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.selection-count {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--color-accent);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
    font-weight: 500;
}

.btn-text:hover {
    color: var(--color-accent-dim);
}

.history-table .col-select {
    width: 50px;
    text-align: center;
}

.history-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.history-table tr.selected {
    background-color: var(--color-accent-light);
}

.history-table tr.selected:hover {
    background-color: var(--color-accent-light);
}

.history-table tr.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.history-table tr.disabled .history-checkbox {
    cursor: not-allowed;
}

.history-table td.clickable {
    cursor: pointer;
}

.history-actions {
    margin-top: var(--space-lg);
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

/* Button styles */
.btn-primary {
    display: inline-block;
    background: var(--color-accent) !important;
    color: #ffffff !important;
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-size: 0.9375rem !important;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    font-family: var(--font-sans);
}

.btn-primary span {
    color: #ffffff !important;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-accent-dim) !important;
}

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

.btn-secondary {
    display: inline-block;
    background: transparent !important;
    color: var(--color-text-secondary) !important;
    border: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-size: 0.9375rem !important;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    font-family: var(--font-sans);
}

.btn-secondary span {
    color: #4b5563 !important;
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--color-accent);
    color: rgb(207, 76, 16) !important;
}

.btn-secondary:hover:not(:disabled) span {
    color: rgb(207, 76, 16) !important;
}

/* Force button text visibility - ultra specific */
button#compareBtn,
button#backToHistoryBtn,
button#downloadComparisonBtn {
    font-size: 0.9375rem !important;
}

button#compareBtn {
    color: #ffffff !important;
}

button#backToHistoryBtn {
    color: #4b5563 !important;
}

button#downloadComparisonBtn {
    color: #ffffff !important;
}

button#compareBtn span,
button#backToHistoryBtn span,
button#downloadComparisonBtn span {
    color: inherit !important;
    font-size: inherit !important;
}

/* Login button */
button#loginBtn {
    color: #ffffff !important;
}

button#loginBtn .login-btn-text {
    color: #ffffff !important;
}

/* Submit/Analyze button */
button#submitBtn {
    color: #ffffff !important;
}

button#submitBtn .submit-btn-text {
    color: #ffffff !important;
}

.submit-btn-text {
    color: #ffffff !important;
    font-weight: 600;
}

/* Results page buttons */
button#backBtn {
    color: #4b5563 !important;
}

button#backBtn span {
    color: inherit !important;
}

button#downloadBtn {
    color: #4b5563 !important;
}

button#downloadBtn span {
    color: inherit !important;
}

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

/* History responsive */
@media (max-width: 768px) {
    .history-section {
        padding: var(--space-md);
    }
    
    .history-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .history-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .history-table .col-select {
        width: 40px;
    }
    
    .history-checkbox {
        width: 18px;
        height: 18px;
    }
    
    /* Hide description and date columns on mobile */
    .history-table th:nth-child(4),
    .history-table td:nth-child(4),
    .history-table th:nth-child(5),
    .history-table td:nth-child(5) {
        display: none;
    }
    
    .history-table td {
        padding: var(--space-sm) var(--space-md);
    }
    
    .history-actions .btn-primary {
        width: 100%;
    }
}

/* Show description on tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .col-description {
        min-width: 140px;
        max-width: 180px;
    }
    
    .history-description-input {
        font-size: 0.8125rem;
    }
}

/* ============================================
   Comparison Section
   ============================================ */
.comparison-section {
    animation: fadeIn 0.6s ease-out;
}

.comparison-header {
    margin-bottom: var(--space-xl);
}

.comparison-header h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
}

.comparison-meta {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.comparison-result-label {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.comparison-result-label strong {
    color: var(--color-text);
    font-weight: 600;
}

/* Summary Card */
.comparison-summary {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.comparison-summary .score-delta {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.comparison-summary .score-delta.positive {
    color: var(--color-score-high);
}

.comparison-summary .score-delta.negative {
    color: var(--color-score-low);
}

.comparison-summary .score-delta.neutral {
    color: var(--color-text-secondary);
}

.comparison-summary .score-comparison-inline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
}

.comparison-summary .verdict {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.comparison-summary .key-takeaway {
    background: var(--color-surface);
    border-left: 4px solid var(--color-accent);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Comparison Card */
.comparison-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Score Changes Grid */
.score-changes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.score-change-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: transform var(--transition-fast);
}

.score-change-card:hover {
    transform: translateY(-2px);
}

.score-change-card.improved {
    border-left: 4px solid var(--color-score-high);
}

.score-change-card.regressed {
    border-left: 4px solid var(--color-score-low);
}

.score-change-card .category-name {
    font-weight: 600;
    margin-bottom: var(--space-sm);
    display: block;
    color: var(--color-text);
}

.score-change-card .score-comparison {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 1.125rem;
}

.score-change-card .delta {
    font-weight: 700;
    margin-left: auto;
}

.score-change-card .delta.positive {
    color: var(--color-score-high);
}

.score-change-card .delta.negative {
    color: var(--color-score-low);
}

.score-change-card .reason {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Issue Evolution */
.issue-evolution {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.issue-stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
}

.issue-stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.issue-stat-card.fixed .stat-value {
    color: var(--color-score-high);
}

.issue-stat-card.new .stat-value {
    color: var(--color-score-low);
}

.issue-stat-card.persistent .stat-value {
    color: var(--color-major);
}

.issue-stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Accordion */
.accordion .accordion-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    overflow: hidden;
}

.accordion .accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.accordion .accordion-header:hover {
    background: rgba(0, 0, 0, 0.02);
}

.accordion .accordion-header .score-change-inline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 0.9375rem;
}

.accordion .accordion-header .delta {
    font-weight: 700;
}

.accordion .accordion-header .delta.positive {
    color: var(--color-score-high);
}

.accordion .accordion-header .delta.negative {
    color: var(--color-score-low);
}

.accordion .accordion-header .delta.neutral {
    color: var(--color-text-secondary);
}

.accordion .accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.accordion .accordion-item.open .accordion-content {
    max-height: 1000px;
    padding: 0 var(--space-lg) var(--space-lg);
}

.accordion .accordion-content p {
    margin-bottom: var(--space-md);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.accordion .accordion-content ul {
    list-style: disc;
    padding-left: var(--space-lg);
    color: var(--color-text-secondary);
}

.accordion .accordion-content li {
    margin-bottom: var(--space-xs);
    line-height: 1.6;
}

.accordion .accordion-toggle {
    transition: transform var(--transition-fast);
    font-size: 0.875rem;
}

.accordion .accordion-item.open .accordion-toggle {
    transform: rotate(180deg);
}

/* Patterns & Recommendations */
.pattern-card,
.recommendation-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.pattern-card.improvement {
    border-left: 4px solid var(--color-score-high);
}

.pattern-card.regression {
    border-left: 4px solid var(--color-score-low);
}

.recommendation-card.high-priority {
    border-left: 4px solid var(--color-critical);
}

.recommendation-card.medium-priority {
    border-left: 4px solid var(--color-major);
}

.recommendation-card.low-priority {
    border-left: 4px solid var(--color-minor);
}

.pattern-card h4,
.recommendation-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.pattern-card p,
.recommendation-card p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.pattern-card p:last-child,
.recommendation-card p:last-child {
    margin-bottom: 0;
}

.pattern-card strong,
.recommendation-card strong {
    color: var(--color-text);
}

#patternsContainer h3,
#recommendationsContainer h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

#patternsContainer h3:first-child,
#recommendationsContainer h3:first-child {
    margin-top: 0;
}

/* Actions */
.comparison-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}


/* Comparison responsive */
@media (max-width: 768px) {
    .comparison-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .score-changes-grid,
    .issue-evolution {
        grid-template-columns: 1fr;
    }
    
    .comparison-actions {
        flex-direction: column;
    }
    
    .comparison-actions button {
        width: 100%;
        justify-content: center;
    }
    
    .comparison-summary .score-delta {
        font-size: 2rem;
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .tagline {
        padding-left: 0;
        border-left: none;
    }

    .main {
        padding: var(--space-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .input-wrapper {
        flex-direction: column;
        padding: var(--space-sm);
    }

    .input-wrapper input {
        width: 100%;
        padding: var(--space-md);
        text-align: center;
    }

    .input-wrapper button {
        width: 100%;
        justify-content: center;
    }

    .input-icon {
        display: none;
    }

    .features {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .score-card {
        flex-direction: column;
        text-align: center;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .issues-tabs {
        flex-direction: column;
    }

    .issue-tab {
        width: 100%;
        text-align: center;
    }

    .issue-item {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .results-header {
        flex-direction: column;
    }

    .analyzed-url-card {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .comparison-actions .back-btn,
    .comparison-actions .download-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --color-surface: #333;
        --color-text-secondary: #ccc;
    }
}