/* ============================================
   AuthentiText - Cozy Academic Styles
   ============================================ */

/* CSS Variables for Easy Theme Customization */
:root {
    /* Academic Cozy Color Palette */
    --primary-burgundy: #8B2635;
    --secondary-forest: #2D5016;
    --accent-gold: #D4AF37;
    --cream: #F5F1E8;
    --warm-white: #FFFEF9;
    --text-dark: #2C2416;
    --text-medium: #5C5446;
    --highlight-red: #FFE5E5;
    --highlight-yellow: #FFF9E5;
    --highlight-green: #E8F5E9;
    --border-color: #D4C5B0;
    --shadow: rgba(139, 38, 53, 0.1);
    
    /* Typography */
    --font-serif: 'Crimson Text', 'Georgia', serif;
    --font-display: 'Libre Baskerville', 'Georgia', serif;
    --font-sans: 'Source Sans Pro', 'Arial', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-serif);
    background-color: var(--cream);
    color: var(--text-dark);
    line-height: 1.7;
    font-size: 18px;
}

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

/* Typography */
h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-burgundy);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--secondary-forest);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-burgundy);
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    background-color: var(--warm-white);
    border-bottom: 3px solid var(--primary-burgundy);
    padding: var(--spacing-md) 0;
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    font-size: 2rem;
    margin-bottom: 0.2rem;
    color: var(--primary-burgundy);
}

.tagline {
    font-size: 0.9rem;
    color: var(--text-medium);
    font-style: italic;
    font-family: var(--font-serif);
}

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

.nav-menu a {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s ease;
}

.nav-menu a:hover {
    transform: translateY(-2px);
}

/* ============================================
   Buttons
   ============================================ */

button {
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary-burgundy);
    color: white;
    padding: 0.9rem 2rem;
    border-radius: 8px;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-primary:hover:not(:disabled) {
    background-color: #6D1E2A;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow);
}

.btn-primary:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-medium);
    padding: 0.9rem 2rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
}

.btn-secondary:hover {
    background-color: var(--warm-white);
    border-color: var(--primary-burgundy);
    color: var(--primary-burgundy);
}

.btn-premium {
    background: linear-gradient(135deg, var(--accent-gold), #B8941F);
    color: white;
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    font-size: 0.95rem;
    box-shadow: 0 3px 8px rgba(212, 175, 55, 0.3);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 12px rgba(212, 175, 55, 0.4);
}

.btn-link {
    background: none;
    color: var(--secondary-forest);
    text-decoration: underline;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
}

.btn-link:hover {
    color: var(--primary-burgundy);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--primary-burgundy), #6D1E2A);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-bottom: 4px solid var(--accent-gold);
}

.hero-content h2 {
    color: white;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.usage-stats {
    background-color: rgba(255, 255, 255, 0.15);
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    font-family: var(--font-sans);
    font-size: 1rem;
}

.stat-item strong {
    font-size: 1.4rem;
    color: var(--accent-gold);
}

/* ============================================
   Main Analyzer Section
   ============================================ */

.main-content {
    padding: var(--spacing-xl) 0;
}

.analyzer-section {
    background-color: var(--warm-white);
    border-radius: 16px;
    box-shadow: 0 8px 24px var(--shadow);
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
}

.input-section {
    margin-bottom: var(--spacing-lg);
}

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

.word-count {
    font-family: var(--font-sans);
    color: var(--text-medium);
    font-size: 0.95rem;
    font-weight: 600;
}

.text-input {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-md);
    border: 3px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: 1.8;
    resize: vertical;
    background-color: var(--cream);
    transition: border-color 0.3s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-burgundy);
    background-color: white;
}

.button-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.disclaimer-box {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: #FFF9E5;
    border-left: 4px solid var(--accent-gold);
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.disclaimer-box strong {
    color: var(--primary-burgundy);
}

/* ============================================
   Results Section
   ============================================ */

.results-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 3px dashed var(--border-color);
}

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

/* Score Card */
.score-card {
    background: linear-gradient(135deg, #FAFAFA, var(--cream));
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow);
}

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

.score-circle {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-sans);
    border: 8px solid var(--border-color);
    background-color: white;
    box-shadow: 0 4px 12px var(--shadow);
    transition: all 0.5s ease;
}

.score-circle.low {
    border-color: #4CAF50;
    color: #2E7D32;
}

.score-circle.medium {
    border-color: #FFC107;
    color: #F57C00;
}

.score-circle.high {
    border-color: #F44336;
    color: #C62828;
}

.score-label {
    flex: 1;
    min-width: 250px;
}

.score-label h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.6rem;
}

.score-label p {
    color: var(--text-medium);
    font-size: 1.1rem;
}

/* Highlighted Text */
.highlighted-section {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--border-color);
}

.highlighted-section h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.info-icon {
    cursor: help;
    font-size: 1.2rem;
    color: var(--text-medium);
}

.highlighted-text {
    font-family: var(--font-serif);
    line-height: 2;
    font-size: 1.05rem;
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--cream);
    border-radius: 8px;
}

.highlighted-text .sentence {
    display: inline;
    padding: 2px 4px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.highlighted-text .sentence.high-risk {
    background-color: var(--highlight-red);
    border-bottom: 2px solid #F44336;
}

.highlighted-text .sentence.medium-risk {
    background-color: var(--highlight-yellow);
    border-bottom: 2px solid #FFC107;
}

.highlighted-text .sentence.low-risk {
    background-color: var(--highlight-green);
    border-bottom: 2px solid #4CAF50;
}

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

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.metric-card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px var(--shadow);
}

/* Advanced metric cards - special styling */
.metric-card.advanced {
    background: linear-gradient(135deg, #FFFEF9, #FFF9E5);
    border-color: var(--accent-gold);
    position: relative;
}

.metric-card.advanced::before {
    content: "ADVANCED";
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 0.5px;
}

/* Confidence card - special prominent styling */
.metric-card.confidence-card {
    background: linear-gradient(135deg, var(--primary-burgundy), #6D1E2A);
    border-color: var(--primary-burgundy);
    color: white;
}

.metric-card.confidence-card .metric-header h5,
.metric-card.confidence-card .metric-description {
    color: white;
}

.metric-card.confidence-card .metric-value {
    color: var(--accent-gold);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

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

.metric-icon {
    font-size: 1.8rem;
}

.metric-header h5 {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--primary-burgundy);
    margin-bottom: var(--spacing-xs);
}

.metric-description {
    font-size: 0.9rem;
    color: var(--text-medium);
    font-family: var(--font-sans);
}

/* Suggestions Section */
.suggestions-section {
    background: linear-gradient(135deg, #FFF9E5, #FFFEF9);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 2px solid var(--accent-gold);
}

.suggestions-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.suggestions-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background-color: white;
    border-left: 4px solid var(--accent-gold);
    border-radius: 6px;
    font-size: 1rem;
    line-height: 1.6;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works {
    padding: var(--spacing-xl) 0;
    background-color: var(--warm-white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.step-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--shadow);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px var(--shadow);
    border-color: var(--primary-burgundy);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-burgundy), #6D1E2A);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    font-family: var(--font-sans);
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 4px 12px var(--shadow);
}

.step-card h3 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-size: 1.4rem;
}

.step-card p {
    color: var(--text-medium);
    line-height: 1.7;
}

/* ============================================
   Pricing Section
   ============================================ */

.pricing-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--cream), var(--warm-white));
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 3px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 4px 16px var(--shadow);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 28px var(--shadow);
}

.pricing-card.featured {
    border-color: var(--accent-gold);
    border-width: 4px;
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.3);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--secondary-forest);
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-badge.premium {
    background: linear-gradient(135deg, var(--accent-gold), #B8941F);
}

.pricing-card h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-dark);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-sans);
    color: var(--primary-burgundy);
    margin-bottom: var(--spacing-md);
}

.price span {
    font-size: 1.2rem;
    color: var(--text-medium);
}

.features-list {
    list-style: none;
    text-align: left;
    margin: var(--spacing-lg) 0;
    padding: 0 var(--spacing-md);
}

.features-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    line-height: 1.6;
}

.features-list li:last-child {
    border-bottom: none;
}

.btn-pricing {
    width: 100%;
    padding: 1rem 2rem;
    background-color: var(--secondary-forest);
    color: white;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    transition: all 0.3s ease;
}

.btn-pricing:hover {
    background-color: #234011;
    transform: translateY(-2px);
}

.btn-pricing.premium {
    background: linear-gradient(135deg, var(--accent-gold), #B8941F);
}

.btn-pricing.premium:hover {
    background: linear-gradient(135deg, #B8941F, #9A7919);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--text-dark);
    color: var(--cream);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--accent-gold);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--cream);
    font-family: var(--font-sans);
    font-size: 0.95rem;
}

.footer-section a:hover {
    color: var(--accent-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--text-medium);
    font-size: 0.9rem;
    color: var(--text-medium);
    font-family: var(--font-sans);
}

/* ============================================
   Modal
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--warm-white);
    margin: 5% auto;
    padding: var(--spacing-lg);
    border: 3px solid var(--accent-gold);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    color: var(--text-medium);
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--primary-burgundy);
}

.modal-content h2 {
    color: var(--primary-burgundy);
    margin-bottom: var(--spacing-md);
}

.modal-features {
    background-color: var(--cream);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

.modal-features ul {
    list-style: none;
}

.modal-features li {
    padding: var(--spacing-xs) 0;
    font-size: 1.05rem;
}

.modal-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    text-align: center;
    margin: var(--spacing-md) 0;
    font-family: var(--font-sans);
}

.modal-note {
    text-align: center;
    color: var(--text-medium);
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
    font-style: italic;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    :root {
        font-size: 16px;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .score-display {
        flex-direction: column;
    }
    
    .score-circle {
        width: 140px;
        height: 140px;
        font-size: 2rem;
    }
    
    .nav-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: space-between;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .button-group button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .pricing-grid,
    .steps-grid,
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

/* ============================================
   Accessibility
   ============================================ */

:focus-visible {
    outline: 3px solid var(--accent-gold);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .hero,
    .pricing-section,
    button {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .analyzer-section {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}