/* === Layout Styles === */

/* === Navbar === */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-glass-border);
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-base);
}

.navbar-container {
    max-width: var(--container-max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.navbar-logo {
    font-size: 2rem;
}

.navbar-title {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
}

.nav-item {
    list-style: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    text-decoration: none;
}

.nav-link.active {
    background: var(--gradient-primary);
    color: white;
}

.nav-icon {
    font-size: 1.25rem;
}

/* Mobile menu toggle */
.navbar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.navbar-toggle:hover {
    background: var(--color-bg-secondary);
}

.hamburger {
    display: block;
    position: relative;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    margin: 0 auto;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    left: 0;
    transition: transform var(--transition-base);
}

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

.hamburger::after {
    bottom: -8px;
}

/* === Sidebar === */

.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--color-glass-border);
    overflow-y: auto;
    z-index: var(--z-sticky);
    transition: width var(--transition-base), transform var(--transition-base);
}

/* Sidebar collapsed state */
.sidebar.collapsed {
    width: 50px;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-content,
.sidebar.collapsed .sidebar-header h2 {
    display: none;
}

.sidebar.collapsed .sidebar-toggle-btn span {
    transform: rotate(180deg);
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-divider);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: 0;
}

.sidebar-toggle-btn {
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.sidebar-toggle-btn:hover {
    background: var(--color-glass-hover);
    color: var(--color-text-primary);
}

.sidebar-toggle-btn span {
    transition: transform var(--transition-base);
}

.sidebar-content {
    padding: var(--space-6);
}

.filters-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.filter-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-divider);
}

/* === Main Content Area === */

.app-container {
    display: flex;
    margin-top: var(--navbar-height);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: calc(100vh - var(--navbar-height));
    padding: var(--space-8);
    transition: margin-left var(--transition-base);
}

/* Main content when sidebar is collapsed */
.main-content.sidebar-collapsed {
    margin-left: 50px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 2px solid var(--color-divider);
}

.page-title {
    font-size: var(--font-size-4xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0;
}

.page-content {
    max-width: var(--container-max-width);
}

/* === Loading Overlay === */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 1;
    transition: opacity var(--transition-base);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    border: 4px solid var(--color-bg-tertiary);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.progress-bar {
    width: 300px;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto var(--space-2);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    width: 0%;
    transition: width var(--transition-base);
}

.progress-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* === Responsive Design === */

@media (max-width: 1024px) {
    .navbar-nav {
        display: none;
        position: absolute;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--color-glass-bg);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--color-glass-border);
        flex-direction: column;
        padding: var(--space-4);
        gap: var(--space-2);
        box-shadow: var(--shadow-lg);
    }

    .navbar-nav.active {
        display: flex;
    }

    .navbar-nav .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: var(--space-3) var(--space-4);
    }

    .navbar-toggle {
        display: block;
    }

    .navbar-toggle.active .hamburger::before {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .navbar-toggle.active .hamburger::after {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .navbar-toggle.active .hamburger {
        background: transparent;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 0 var(--space-4);
    }

    .main-content {
        padding: var(--space-4);
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .page-title {
        font-size: var(--font-size-2xl);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .navbar-brand {
        font-size: var(--font-size-base);
    }

    .navbar-logo {
        font-size: 1.5rem;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
    }
}