/* ============================================
   LAYOUT - Navigation, Footer
   ============================================ */

/* Navigation */
.navbar {
    background: var(--bg-secondary);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.nav-brand .logo {
    height: 40px;
    width: auto;
}

.brand-name {
    display: inline-block;
    overflow: hidden;
}

.brand-tux {
    color: #ffffff;
    display: inline-block;
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInFromLeft 0.5s ease-out 2s forwards;
}

.brand-doctor {
    color: #3584e4;
    display: inline-block;
    opacity: 0;
    transform: translateX(-50px);
    animation: slideInFromLeft 0.5s ease-out 1s forwards;
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Light theme adjustments */
html[data-theme="light"] .brand-tux {
    color: #000000;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-color);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-color);
    margin-left: 1rem;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

html[data-theme="light"] .theme-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .moon-icon {
    display: none;
}

/* Hamburger Menu Toggle Button */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--text-color);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 28px;
    height: 2px;
    background: var(--text-color);
    transition: var(--transition);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

/* Hamburger animation when active */
.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-color);
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-info {
    text-align: right;
    opacity: 0.7;
    font-size: 0.9rem;
}