/* ========================================
   paper.fyi - URL Summarizer
   Editorial + Graffiti Style
   ======================================== */

/* CSS Variables */
:root {
    /* Editorial Colors - Sophisticated, muted */
    --color-bg: #f8f6f3;
    --color-bg-alt: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #666666;
    --color-text-light: #999999;
    --color-border: #e0dcd5;
    --color-border-dark: #c9c4bb;
    
    /* Graffiti Colors - Bold, vibrant */
    --color-graffiti-primary: #ff2d55;
    --color-graffiti-secondary: #00d4aa;
    --color-graffiti-accent: #ffcc00;
    --color-graffiti-dark: #1a1a2e;
    
    /* Typography */
    --font-editorial: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;
    --font-graffiti: 'Permanent Marker', cursive;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* 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-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.logo-formal {
    font-family: var(--font-editorial);
    font-size: 1.5rem;
    font-weight: 400;
    font-style: italic;
    color: var(--color-text);
}

.logo-graffiti {
    font-family: var(--font-graffiti);
    font-size: 1.75rem;
    color: var(--color-graffiti-primary);
    transform: rotate(-2deg);
    display: inline-block;
}

.main-nav {
    display: flex;
    gap: var(--spacing-md);
}

.main-nav a {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.main-nav a:hover {
    color: var(--color-graffiti-primary);
}

/* ========================================
   Flash Messages
   ======================================== */
.flash-messages {
    max-width: 800px;
    margin: var(--spacing-md) auto;
    padding: 0 var(--spacing-md);
}

.flash {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    margin-bottom: var(--spacing-xs);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
}

.flash-error {
    background: #fee2e2;
    color: #b91c1c;
    border-left: 4px solid #dc2626;
}

.flash-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--color-graffiti-secondary);
}

.flash-info {
    background: #e0e7ff;
    color: #3730a3;
    border-left: 4px solid #6366f1;
}

.flash-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.flash-close:hover {
    opacity: 1;
}

/* ========================================
   Hero Section (Home)
   ======================================== */
.hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero-content {
    max-width: 900px;
    width: 100%;
    text-align: center;
    padding: 0 var(--spacing-md);
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.hero-title .formal {
    display: block;
    font-family: var(--font-editorial);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.2;
}

.hero-title .graffiti {
    display: block;
    font-family: var(--font-graffiti);
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--color-graffiti-primary);
    transform: rotate(-1deg);
    margin-top: -0.25em;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

/* URL Form */
.url-form {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.input-wrapper {
    display: flex;
    gap: 0;
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border-dark);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--color-graffiti-primary);
    box-shadow: 0 0 0 3px rgba(255, 45, 85, 0.1);
}

.url-input {
    flex: 1;
    padding: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: none;
    outline: none;
    background: transparent;
}

.url-input::placeholder {
    color: var(--color-text-light);
}

.submit-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-graffiti);
    font-size: 1.1rem;
    color: white;
    background: var(--color-graffiti-primary);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.submit-btn:hover:not(:disabled) {
    background: #e6284d;
    transform: scale(1.02);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.spinner {
    width: 18px;
    height: 18px;
    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); }
}

.input-hint {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ========================================
   Recent Summaries Section
   ======================================== */
.recent-summaries {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-md);
}

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

.section-title {
    font-size: 1.75rem;
}

.section-title .formal {
    font-family: var(--font-editorial);
    font-weight: 400;
    font-style: italic;
}

.section-title .graffiti {
    font-family: var(--font-graffiti);
    color: var(--color-graffiti-primary);
    margin-left: 0.25em;
}

.view-all-link {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-graffiti-primary);
    transition: color var(--transition-fast);
}

.view-all-link:hover {
    color: var(--color-text);
}

/* Summaries Grid */
.summaries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-md);
}

.summary-card {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.summary-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--color-graffiti-primary);
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-graffiti-primary);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.summary-card:hover::before {
    transform: scaleY(1);
}

.card-title {
    font-family: var(--font-editorial);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.card-direct-take {
    font-family: var(--font-graffiti);
    font-size: 1rem;
    color: var(--color-graffiti-primary);
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}

.card-meta {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.empty-message {
    font-family: var(--font-editorial);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.empty-decoration .graffiti {
    font-family: var(--font-graffiti);
    font-size: 1.5rem;
    color: var(--color-graffiti-secondary);
    transform: rotate(-3deg);
    display: inline-block;
}

/* ========================================
   Summary Detail Page
   ======================================== */
.summary-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.summary-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.summary-meta {
    font-size: 0.85rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.summary-title {
    font-family: var(--font-editorial);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.direct-take-highlight {
    background: var(--color-graffiti-dark);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: 8px;
    position: relative;
    transform: rotate(-0.5deg);
}

.quote-mark {
    font-family: var(--font-editorial);
    font-size: 4rem;
    color: var(--color-graffiti-primary);
    opacity: 0.5;
    line-height: 1;
    position: absolute;
}

.quote-mark:first-child {
    top: 0.25rem;
    left: 1rem;
}

.quote-mark:last-child {
    bottom: -1rem;
    right: 1rem;
}

.direct-take-text {
    font-family: var(--font-graffiti);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--color-graffiti-secondary);
    text-align: center;
    line-height: 1.4;
    padding: 0 var(--spacing-md);
}

.summary-body {
    margin-bottom: var(--spacing-xl);
}

.body-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-border);
}

.formal-summary {
    font-family: var(--font-editorial);
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--color-text);
}

.summary-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.source-info {
    margin-bottom: var(--spacing-lg);
}

.source-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.source-link {
    font-size: 0.95rem;
    color: var(--color-graffiti-primary);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    word-break: break-all;
    transition: color var(--transition-fast);
}

.source-link:hover {
    color: var(--color-text);
}

.summary-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.action-btn-primary {
    background: var(--color-graffiti-primary);
    color: white;
}

.action-btn-primary:hover {
    background: #e6284d;
    transform: translateY(-2px);
}

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

.action-btn-secondary:hover {
    background: var(--color-border);
}

/* ========================================
   Archive Page
   ======================================== */
.archive-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-xxl);
}

.archive-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.archive-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.archive-title .formal {
    font-family: var(--font-editorial);
    font-weight: 400;
    font-style: italic;
}

.archive-title .graffiti {
    font-family: var(--font-graffiti);
    color: var(--color-graffiti-primary);
}

.archive-subtitle {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.archive-card {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.archive-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
    border-color: var(--color-graffiti-secondary);
}

.archive-date {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.archive-card-title {
    font-family: var(--font-editorial);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.archive-card-take {
    font-family: var(--font-graffiti);
    font-size: 0.95rem;
    color: var(--color-graffiti-primary);
    line-height: 1.3;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.pagination-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--color-border-dark);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.pagination-btn:not(.disabled):hover {
    background: var(--color-graffiti-primary);
    color: white;
    border-color: var(--color-graffiti-primary);
}

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

.pagination-info {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ========================================
   Error Pages
   ======================================== */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.error-content {
    text-align: center;
}

.error-code {
    font-size: clamp(4rem, 15vw, 10rem);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.error-code .formal {
    font-family: var(--font-editorial);
    font-weight: 700;
    color: var(--color-text);
}

.error-code .graffiti {
    font-family: var(--font-graffiti);
    color: var(--color-graffiti-primary);
}

.error-title {
    font-family: var(--font-editorial);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.error-message {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.error-cta {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-graffiti);
    font-size: 1.1rem;
    color: white;
    background: var(--color-graffiti-primary);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.error-cta:hover {
    background: #e6284d;
    transform: translateY(-2px);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    margin-top: auto;
    background: var(--color-graffiti-dark);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-tagline {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline .formal {
    font-family: var(--font-editorial);
    font-style: italic;
}

.footer-tagline .graffiti {
    font-family: var(--font-graffiti);
    color: var(--color-graffiti-secondary);
    margin-left: 0.5em;
}

.footer-copy {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-sm);
    }
    
    .logo-formal {
        font-size: 1.25rem;
    }
    
    .logo-graffiti {
        font-size: 1.5rem;
    }
    
    .main-nav {
        gap: var(--spacing-sm);
    }
    
    .main-nav a {
        font-size: 0.8rem;
    }
    
    .hero {
        min-height: 40vh;
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .input-wrapper {
        flex-direction: column;
    }
    
    .submit-btn {
        width: 100%;
    }
    
    .summaries-grid,
    .archive-grid {
        grid-template-columns: 1fr;
    }
    
    .direct-take-highlight {
        padding: var(--spacing-md);
    }
    
    .quote-mark {
        font-size: 2.5rem;
    }
    
    .summary-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}