:root {
    --nav-h: 70px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sticky Footer & Global Font Setup */
body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-main);
    padding-top: var(--nav-h);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}

/* Global Dark Mode Support for Form Elements */
[data-theme='dark'] select,
[data-theme='dark'] input,
[data-theme='dark'] textarea {
    color-scheme: dark;
    background-color: var(--input-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--input-border) !important;
}

[data-theme='dark'] option {
    background-color: var(--bg-card);
    color: var(--text-main);
}

main {
    flex: 1;
    /* Ensure main content pushes footer down */
}

footer {
    background-color: var(--bg-main);
    padding: 20px;
    text-align: center;
    border-top: 1px solid var(--border-base);
    margin-top: auto;
}

/* --- NAVBAR CONTAINER --- */
.navbar-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-h);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-base);
    z-index: 1000;
    transition: transform var(--transition);
    display: flex;
    align-items: center;
}

.navbar-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* --- LOGO --- */
.logo-group {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
    flex-shrink: 0;
}

.navbar-logo-text {
    font-weight: 700;
    font-size: 1rem;
    white-space: nowrap;
}

/* --- RIGHT GROUP (Navigation + Actions) --- */
.navbar-right-group {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

/* --- DESKTOP NAVIGATION --- */
.desktop-links {
    display: flex;
    gap: 1.5rem; 
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-main);
}

.navbar-btn {
    background: var(--primary);
    color: white;
    padding: 8px 14px;
    border-radius: 6px;
    border: none;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.navbar-btn:hover {
    opacity: 0.85;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-base);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

@media (max-width: 1150px) {
    .navbar-actions {
        margin-right: 1rem;
    }
}

.theme-toggle-btn:hover {
    background: var(--bg-main);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.theme-toggle-btn i {
    font-size: 1.1rem;
}

/* --- HAMBURGER --- */
.hamburger {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}

.hamburger span {
    width: 22px;
    height: 2px;
    background: var(--text-main);
    transition: var(--transition);
}

/* --- MOBILE MENU --- */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-card);
    box-shadow: var(--shadow-card);
    z-index: 999;
    display: flex;
    flex-direction: column;
    padding-top: var(--nav-h);
    transform: translateX(100%);
    transition: transform var(--transition);
}

.mobile-menu.show {
    transform: translateX(0);
}

.mobile-menu a,
.mobile-menu button {
    padding: 16px 24px;
    font-size: 0.95rem;
    text-decoration: none;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-soft);
    text-align: left;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    width: 100%;
    font-family: inherit;
}

/* --- RESPONSIVE LOGIC --- */
@media (max-width: 1150px) {
    .desktop-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }
}

/* --- VIEW TRANSITIONS & PAGE ANIMATIONS --- */
@view-transition {
    navigation: auto;
}

/* Page Entry Animation (Modern Architectural Feel) */
main {
    flex: 1;
    animation: architectural-enter var(--transition-page) forwards;
    will-change: transform, opacity;
}

@keyframes architectural-enter {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Page Exit Animation (Triggered by body.page-exit class) */
body.page-exit main {
    animation: architectural-exit 0.4s var(--transition-page) forwards;
}

@keyframes architectural-exit {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(-30px);
    }
}

/* Premium theme toggle ripple (keeping existing logic) */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
}

::view-transition-old(root) {
    z-index: 1;
}

::view-transition-new(root) {
    z-index: 2147483647; 
}