/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-medium);
    z-index: var(--z-navbar);
}

.navbar.scrolled {
    background-color: rgba(44, 44, 44, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-white);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links .btn-cta {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.nav-links .btn-cta::after {
    display: none;
}

.nav-links .btn-cta:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--spacing-xs);
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-image: url('../images/hero/church-building.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--color-white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(30, 58, 95, 0.85) 0%,
        rgba(58, 95, 124, 0.7) 50%,
        rgba(30, 58, 95, 0.85) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    padding: var(--spacing-lg);
}

.hero-title {
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-hero));
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(var(--font-size-lg), 3vw, var(--font-size-2xl));
    font-weight: 300;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.hero-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-md);
}

.hero-date,
.hero-location {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.hero-date svg,
.hero-location svg {
    opacity: 0.9;
}

/* About Section */
.about {
    background-color: var(--color-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text {
    font-size: var(--font-size-md);
    color: var(--color-dark);
}

.about-text .lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.about-list {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-lg);
    list-style: none;
}

.about-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.about-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Speakers Section */
.speakers {
    background-color: var(--color-light);
}

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

/* Registration Section */
.registration {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-white);
}

.registration .section-title {
    color: var(--color-white);
}

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

.registration-info h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.registration-info p {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.info-item svg {
    flex-shrink: 0;
    margin-top: 4px;
}

.info-item strong {
    display: block;
    margin-bottom: 4px;
    font-size: var(--font-size-md);
}

.info-item p {
    margin-bottom: 0;
    opacity: 0.9;
    font-size: var(--font-size-sm);
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

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

.footer-section h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.footer-section p {
    opacity: 0.85;
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

.footer-section a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

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

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.7;
    font-size: var(--font-size-xs);
}