/* 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);
}

@media (max-width: 767px) {
    .navbar {
        padding: 10px 0;
        background-color: rgba(74, 90, 53, 0.95);
    }
}

.navbar.scrolled {
    background-color: rgba(74, 90, 53, 0.97);
    box-shadow: var(--shadow-md);
}

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

.nav-brand {
    color: var(--color-white);
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-main {
    font-family: var(--font-heading);
    font-size: var(--font-size-md);
    font-weight: 600;
    font-style: italic;
    line-height: 1.2;
}

.logo-sub {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 400;
    opacity: 0.85;
    line-height: 1.3;
    letter-spacing: 0.5px;
}

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

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

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

.nav-links a.active {
    color: var(--color-secondary);
    font-weight: 600;
}

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

.nav-links a:hover::after,
.nav-links a.active::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-pill);
    transition: all var(--transition-fast);
}

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

.nav-links .btn-cta:hover {
    background-color: var(--color-primary-light);
    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;
    padding: 80px 0 40px;
    background: linear-gradient(135deg, #4A5A35 0%, #6B7F4E 40%, #8FA86E 70%, #A3B87C 100%);
    color: var(--color-white);
    overflow: hidden;
}

/* Botanical pattern overlay */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.08;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.3) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.3) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(255,255,255,0.2) 2px, transparent 2px),
        radial-gradient(circle at 30% 80%, rgba(255,255,255,0.3) 1px, transparent 1px),
        radial-gradient(circle at 70% 20%, rgba(255,255,255,0.3) 1px, transparent 1px);
    background-size: 100px 100px, 120px 120px, 80px 80px, 90px 90px, 110px 110px;
    pointer-events: none;
}

/* Decorative leaf shapes */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.05;
    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M30 5 C20 15 10 30 30 55 C50 30 40 15 30 5Z' fill='white' opacity='0.5'/%3E%3C/svg%3E");
    background-size: 120px 120px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 750px;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-label {
    font-family: var(--font-body);
    font-size: var(--font-size-md);
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-hero));
    font-weight: 700;
    font-style: italic;
    margin-bottom: var(--spacing-md);
    color: #FFFFFF;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
    line-height: 1.1;
}

.hero-date-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-pill);
    padding: var(--spacing-xs) var(--spacing-md);
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    letter-spacing: 1px;
}

.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);
    font-family: var(--font-body);
}

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

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

/* About Section */
.about {
    background-color: var(--color-bg-cream);
    padding-top: var(--spacing-4xl);
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--color-dark);
    line-height: 1.8;
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.about-text p {
    margin-bottom: var(--spacing-md);
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Highlights cards */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.highlight-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
    border: 1px solid rgba(107, 127, 78, 0.1);
}

.highlight-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.highlight-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
    border-radius: 50%;
    color: var(--color-white);
}

.highlight-card h3 {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.highlight-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 0;
}

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

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

/* Registration Section */
.registration {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, 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-md);
    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-primary-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-white);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-family: var(--font-heading);
}

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

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

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

.contact-person {
    margin-bottom: var(--spacing-sm);
}

.contact-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-phone {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    transition: color var(--transition-fast);
}

.contact-phone:hover {
    color: var(--color-secondary);
}

.telegram-channel {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-white);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.telegram-channel:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: var(--spacing-md);
    text-align: center;
}

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