/* ========== LAYOUT STYLES ========== */

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    position: relative;
    z-index: 1;
}

/* ========== NAVBAR ========== */

.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: var(--z-navbar);
    transition: all var(--transition-normal);
}

body.dark-mode .navbar {
    background: rgba(10, 15, 10, 0.8);
    border-bottom: 1px solid rgba(255, 153, 51, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.logo-text {
    font-size: var(--font-size-xl);
    margin: 0;
    color: var(--primary-color);
    font-weight: 500;
    letter-spacing: 0.5px;
}

body.dark-mode .logo-text {
    color: var(--secondary-color);
}

/* Navigation Menu */

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

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

/* Navigation Actions */

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--primary-color);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--secondary-color);
    transform: rotate(20deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

/* ========== GRID LAYOUTS ========== */

.timeline-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
    display: none;
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    position: relative;
}

.timeline-item:nth-child(odd) {
    grid-template-columns: 1fr 1fr;
}

.timeline-item:nth-child(even) .timeline-content {
    order: 2;
}

.timeline-item:nth-child(even) .timeline-marker {
    order: 1;
}

.timeline-marker {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 10;
}

.timeline-dot {
    width: 24px;
    height: 24px;
    background-color: var(--secondary-color);
    border: 4px solid var(--bg-light);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

/* ========== CARDS ========== */

.card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 9 !important;
    height: auto !important;
    background-color: var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.card-title {
    font-size: var(--font-size-large);
    margin-bottom: var(--space-sm);
}

.card-subtitle {
    color: var(--text-light);
    font-size: var(--font-size-small);
    margin-bottom: var(--space-md);
}

.card-content {
    color: var(--text-light);
    line-height: var(--line-height-relaxed);
}

/* ========== MODAL ========== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn var(--transition-normal);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--text-dark);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--accent-color);
}

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

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.flex-column {
    display: flex;
    flex-direction: column;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

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

.pt-lg { padding-top: var(--space-lg); }
.pb-lg { padding-bottom: var(--space-lg); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.my-lg { margin-top: var(--space-lg); margin-bottom: var(--space-lg); }