/* ================================================
   OQueEATP - Global Styles
   Site de autoridade sobre ATP e energia celular
   ================================================ */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    
    /* Accent Colors */
    --accent-color: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    
    /* Success/Energy Colors */
    --success-color: #10b981;
    --success-dark: #059669;
    --success-light: #34d399;
    
    /* Text Colors */
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;
    --border-color: #e2e8f0;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --gradient-hero: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --line-height: 1.7;
    
    /* Spacing */
    --container-max: 1200px;
    --container-narrow: 850px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height);
    color: var(--text-dark);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.25rem; }

p {
    color: var(--text-medium);
    margin-bottom: 1.25rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ================================================
   HEADER & NAVIGATION
   ================================================ */

.site-header {
    background: var(--gradient-hero);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: white;
    flex-shrink: 0;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    backdrop-filter: blur(10px);
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.nav-links a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.6rem;
    margin-left: 0.25rem;
    transition: transform var(--transition-fast);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    min-width: 280px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    color: var(--text-dark);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    display: block;
}

.dropdown-menu a:hover {
    background: var(--primary-50);
    color: var(--primary-color);
}

.dropdown-menu .dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* CTA Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid currentColor;
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

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

.btn-white:hover {
    background: var(--bg-light);
    color: var(--primary-dark);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ================================================
   HERO SECTION
   ================================================ */

.hero {
    background: var(--gradient-hero);
    padding: 4rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero h1 {
    color: white;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ================================================
   MAIN CONTENT
   ================================================ */

.main-content {
    max-width: var(--container-narrow);
    margin: -2rem auto 0;
    padding: 0 1.5rem 3rem;
    position: relative;
    z-index: 10;
}

.content-card {
    background: var(--bg-white);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
    margin-bottom: 2rem;
}

/* Article Typography */
.content-card h2 {
    color: var(--primary-dark);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--accent-color);
    display: inline-block;
}

.content-card h2:first-child {
    margin-top: 0;
}

.content-card h3 {
    color: var(--text-dark);
    margin: 2rem 0 0.75rem;
}

.content-card p {
    font-size: 1.05rem;
}

/* Lists */
.content-card ul,
.content-card ol {
    margin: 1.25rem 0;
    padding-left: 0;
    list-style: none;
}

.content-card li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-medium);
    font-size: 1.05rem;
}

.content-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
}

.content-card ol {
    counter-reset: item;
}

.content-card ol li {
    counter-increment: item;
}

.content-card ol li::before {
    content: counter(item);
    position: absolute;
    left: 0;
    top: 0.1rem;
    width: 22px;
    height: 22px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Internal Links */
.internal-link {
    background: linear-gradient(120deg, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    background-size: 100% 0.2em;
    background-position: 0 88%;
    background-repeat: no-repeat;
    padding: 0.1em 0.2em;
    border-radius: 3px;
    transition: all var(--transition-normal);
}

.internal-link:hover {
    background-size: 100% 100%;
    color: var(--primary-dark);
}

/* Article Images */
.article-image {
    width: 100%;
    border-radius: 12px;
    margin: 1.5rem 0;
    box-shadow: var(--shadow-md);
}

.image-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: -1rem;
    margin-bottom: 1.5rem;
    font-style: italic;
}

/* ================================================
   INFO BOXES
   ================================================ */

.info-box {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 12px 12px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.info-box-title {
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-box p {
    margin: 0;
    color: var(--text-medium);
}

/* Tip Box */
.tip-box {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-left: 4px solid var(--success-color);
    border-radius: 0 12px 12px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.tip-box-title {
    font-weight: 600;
    color: #047857;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tip-box p,
.tip-box li {
    color: #065f46;
    margin: 0;
}

/* Warning Box */
.warning-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-left: 4px solid var(--accent-color);
    border-radius: 0 12px 12px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.warning-box-title {
    font-weight: 600;
    color: var(--accent-dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.warning-box p {
    color: #78350f;
    margin: 0;
}

/* ================================================
   CTA BOXES
   ================================================ */

.cta-box {
    background: var(--gradient-primary);
    border-radius: 16px;
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
    color: white;
}

.cta-box-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.25rem;
}

.ignicell-cta {
    background: linear-gradient(135deg, #f97316 0%, #f59e0b 100%);
}

/* ================================================
   CAROUSEL
   ================================================ */

.carousel-section {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    border-radius: 16px;
    padding: 2rem;
    margin: 2rem 0;
}

.carousel-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    text-align: center;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.carousel-slides {
    display: flex;
    transition: transform var(--transition-slow);
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
}

.carousel-slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1.5rem 1.5rem;
    border-radius: 0 0 12px 12px;
}

.carousel-slide-caption h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: white;
}

.carousel-slide-caption p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: all var(--transition-fast);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: white;
}

.carousel-btn.prev { left: 1rem; }
.carousel-btn.next { right: 1rem; }

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.carousel-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel-indicator.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 5px;
}

/* ================================================
   FAQ
   ================================================ */

.faq-section {
    margin: 2rem 0;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    overflow: hidden;
    background: var(--bg-white);
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--bg-white);
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.25rem;
    max-height: 500px;
}

.faq-answer p {
    margin: 0;
}

/* ================================================
   ARTICLE CARDS (Homepage/Index)
   ================================================ */

.articles-section {
    padding: 4rem 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    margin-bottom: 0.5rem;
}

.section-header p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.article-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.article-card-image {
    height: 200px;
    overflow: hidden;
}

.article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .article-card-image img {
    transform: scale(1.05);
}

.article-card-content {
    padding: 1.5rem;
}

.article-card-tag {
    display: inline-block;
    background: var(--primary-50);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.article-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.article-card h3 a {
    color: var(--text-dark);
}

.article-card h3 a:hover {
    color: var(--primary-color);
}

.article-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.article-card-link {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.article-card-link:hover {
    gap: 0.75rem;
}

/* Featured Article */
.featured-article {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.featured-article .article-card-image {
    height: 100%;
    min-height: 300px;
}

.featured-article .article-card-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
}

.featured-article h3 {
    font-size: 1.5rem;
}

/* ================================================
   QUIZ
   ================================================ */

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
}

.quiz-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.quiz-progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-gray);
    border-radius: 4px;
    overflow: hidden;
}

.quiz-progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width var(--transition-normal);
}

.quiz-progress-text {
    font-size: 0.9rem;
    color: var(--text-light);
    white-space: nowrap;
}

.quiz-question {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.quiz-question h3 {
    margin-bottom: 1.5rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quiz-option:hover {
    border-color: var(--primary-color);
    background: var(--primary-50);
}

.quiz-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-50);
}

.quiz-option.correct {
    border-color: var(--success-color);
    background: #d1fae5;
}

.quiz-option.incorrect {
    border-color: #ef4444;
    background: #fee2e2;
}

.quiz-option-letter {
    width: 32px;
    height: 32px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-medium);
    flex-shrink: 0;
}

.quiz-option.selected .quiz-option-letter {
    background: var(--primary-color);
    color: white;
}

.quiz-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.quiz-result {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.quiz-score {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.quiz-result h3 {
    margin-bottom: 0.5rem;
}

.quiz-result p {
    margin-bottom: 2rem;
}

/* ================================================
   GLOSSARY
   ================================================ */

.glossary-search {
    margin-bottom: 2rem;
}

.glossary-search input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.glossary-search input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.glossary-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.glossary-nav a {
    padding: 0.5rem 0.75rem;
    background: var(--bg-light);
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-medium);
}

.glossary-nav a:hover,
.glossary-nav a.active {
    background: var(--primary-color);
    color: white;
}

.glossary-section {
    margin-bottom: 2rem;
}

.glossary-letter {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.glossary-term {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.glossary-term:last-child {
    border-bottom: none;
}

.glossary-term h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.glossary-term p {
    margin: 0;
    font-size: 0.95rem;
}

/* ================================================
   CONTACT FORM
   ================================================ */

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ================================================
   FOOTER
   ================================================ */

.site-footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    padding-left: 0;
    margin-bottom: 0.5rem;
}

.footer-links li::before {
    display: none;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

/* ================================================
   RESPONSIVE DESIGN
   ================================================ */

@media (max-width: 992px) {
    .featured-article {
        grid-template-columns: 1fr;
    }
    
    .featured-article .article-card-image {
        min-height: 250px;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        order: 3;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .nav-links {
        flex-direction: column;
        padding: 1rem 0;
    }
    
    .nav-links > li {
        width: 100%;
    }
    
    .nav-links a {
        padding: 0.75rem 0;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: transparent;
        padding-left: 1rem;
    }
    
    .dropdown-menu a {
        color: rgba(255, 255, 255, 0.8);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .header-cta {
        order: 2;
    }
    
    .hero {
        padding: 2rem 0 3rem;
    }
    
    .content-card {
        padding: 1.5rem;
    }
    
    .carousel-slide img {
        height: 250px;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .quiz-actions {
        flex-direction: column;
    }
    
    .quiz-actions .btn {
        width: 100%;
    }
}

/* ================================================
   UTILITIES
   ================================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}