/* ===================================
   UsPresidents.net - Main Stylesheet
   Color Palette:
   - Navy Blue: #1a3a52
   - Dark Navy: #0f2942
   - Gold: #d4af37
   - Cream: #f5f1e8
   - White: #ffffff
   - Light Gray: #e8e8e8
   =================================== */

/* === CSS RESET & BASE STYLES === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Variables */
    --primary-navy: #1a3a52;
    --dark-navy: #0f2942;
    --gold: #d4af37;
    --cream: #f5f1e8;
    --white: #ffffff;
    --light-gray: #e8e8e8;
    --text-dark: #2c3e50;
    --text-light: #666666;

    /* Typography */
    --font-heading: 'Merriweather', serif;
    --font-body: 'Open Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-navy);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--gold);
}

/* === UTILITY CLASSES === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--gold), var(--primary-navy));
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.1rem;
    color: var(--text-light);
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--gold);
    color: var(--dark-navy);
    border-color: var(--gold);
}

.btn-primary:hover {
    background-color: #c19a2e;
    border-color: #c19a2e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--dark-navy);
    border-color: var(--dark-navy);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 58, 82, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-navy);
    border-color: var(--primary-navy);
}

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

/* === HEADER === */
.site-header {
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-navy) 100%);
    color: var(--white);
    padding: var(--spacing-sm) 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo h1 {
    font-size: 1.8rem;
    margin: 0;
    color: var(--white);
}

.logo h1 a {
    color: var(--white);
}

.logo h1 a:hover {
    color: var(--gold);
}

.logo .domain {
    color: var(--gold);
}

.tagline {
    font-size: 0.85rem;
    color: var(--cream);
    margin: 0;
    font-style: italic;
}

/* === NAVIGATION === */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.main-nav a {
    color: var(--white);
    font-weight: 600;
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--gold);
    transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--gold);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger-icon {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 3px 0;
    transition: var(--transition);
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--dark-navy) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-content h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    color: var(--cream);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* === FEATURED PRESIDENT === */
.featured-president {
    padding: var(--spacing-xl) 0;
    background-color: var(--cream);
}

.featured-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.featured-image {
    position: relative;
}

.featured-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.featured-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background-color: var(--gold);
    color: var(--dark-navy);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.9rem;
}

.featured-text h3 {
    font-size: 2rem;
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.featured-text .term {
    color: var(--gold);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.featured-text .excerpt {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.quick-facts {
    background-color: var(--white);
    padding: var(--spacing-sm);
    border-radius: 6px;
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--gold);
}

.fact {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--light-gray);
}

.fact:last-child {
    border-bottom: none;
}

.fact .label {
    font-weight: 600;
    color: var(--primary-navy);
}

.fact .value {
    color: var(--text-dark);
}

/* === TIMELINE SECTION === */
.timeline-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

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

.timeline-card {
    background-color: var(--cream);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-top: 4px solid var(--gold);
    transition: var(--transition);
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.timeline-header {
    margin-bottom: var(--spacing-sm);
}

.timeline-header h3 {
    color: var(--primary-navy);
    margin-bottom: var(--spacing-xs);
}

.timeline-header .years {
    display: inline-block;
    background-color: var(--gold);
    color: var(--dark-navy);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
}

.timeline-card p {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.president-list {
    list-style: none;
}

.president-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

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

.president-list a {
    color: var(--primary-navy);
    font-weight: 600;
}

.president-list a:hover {
    color: var(--gold);
    padding-left: 5px;
}

.timeline-cta {
    text-align: center;
}

/* === PRESIDENTS INDEX === */
.presidents-index {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

/* Search Bar */
.search-bar {
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
}

.search-bar input {
    flex: 1;
    padding: 0.875rem var(--spacing-sm);
    border: 2px solid var(--primary-navy);
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-body);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.search-btn {
    padding: 0.875rem 2rem;
    background-color: var(--primary-navy);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background-color: var(--dark-navy);
}

/* Filter Options */
.filter-options {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    background-color: var(--white);
    color: var(--primary-navy);
    border: 2px solid var(--primary-navy);
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-navy);
    color: var(--white);
}

/* Presidents Grid */
.presidents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.president-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    position: relative;
}

.president-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.president-number {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: var(--gold);
    color: var(--dark-navy);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.president-portrait img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: var(--spacing-sm) auto;
    border: 4px solid var(--gold);
}

.president-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.president-term {
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.president-party {
    color: var(--primary-navy);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--gold);
    font-weight: 600;
}

.card-link:hover {
    text-decoration: underline;
}

.president-card.placeholder {
    background-color: var(--cream);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

/* === LATEST UPDATES === */
.latest-updates {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.updates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.update-card {
    background-color: var(--cream);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--gold);
    transition: var(--transition);
}

.update-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.update-category {
    display: inline-block;
    background-color: var(--primary-navy);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.update-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.update-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.read-more {
    color: var(--gold);
    font-weight: 600;
    display: inline-block;
    margin-top: var(--spacing-sm);
}

.read-more:hover {
    color: var(--primary-navy);
}

/* === FOOTER === */
.site-footer {
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--primary-navy) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h3 {
    color: var(--gold);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: var(--cream);
    line-height: 1.7;
}

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

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

.footer-section.links a {
    color: var(--cream);
}

.footer-section.links a:hover {
    color: var(--gold);
    padding-left: 5px;
}

/* Newsletter Form */
.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.newsletter-form input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem var(--spacing-sm);
    border: 2px solid var(--cream);
    border-radius: 4px;
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--gold);
}

.newsletter-form button {
    padding: 0.75rem 1.5rem;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-bottom p {
    color: var(--cream);
    margin: 0;
}

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

.social-links a {
    color: var(--cream);
    padding: 0.5rem;
}

.social-links a:hover {
    color: var(--gold);
}

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

/* Tablet (768px and below) */
@media (max-width: 768px) {
    .header-content {
        position: relative;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        width: 100%;
        order: 3;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding-top: var(--spacing-sm);
    }

    .main-nav li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav a {
        display: block;
        padding: var(--spacing-sm) 0;
    }

    .featured-content {
        grid-template-columns: 1fr;
    }

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

    .hero-content h2 {
        font-size: 2rem;
    }

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

    .presidents-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }

    .logo h1 {
        font-size: 1.5rem;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .search-bar {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
    }

    .filter-options {
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }

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

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form input,
    .newsletter-form button {
        width: 100%;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .hero,
    .mobile-menu-toggle,
    .search-bar,
    .filter-options,
    .btn {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
    }
}