/* SAA - responsive.css
   Mobile-Navigation (Burger-Menu), responsive Breakpoints fuer Mobile-Nav. */

/* ============================================
   MOBILE NAVIGATION - BURGER MENU
   ============================================ */

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 360px;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-secondary);
    backdrop-filter: blur(40px) saturate(180%);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease;
    overflow: hidden;
}

.mobile-nav-drawer.open {
    right: 0;
}

/* Drawer Header */
.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.drawer-logo {
    height: 32px;
    width: auto;
}

.drawer-header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.drawer-header-actions .theme-toggle {
    transform: scale(0.9);
}

.drawer-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.drawer-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color-hover, var(--border-color));
}

/* Drawer Content */
.drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.drawer-section-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.5rem 0.25rem;
    margin-top: 0.5rem;
}

.drawer-nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.drawer-nav-link:hover {
    background: var(--bg-secondary);
    border-color: var(--btc-primary);
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.drawer-nav-link.highlight {
    background: var(--btc-primary);
    border-color: var(--btc-primary);
    color: white;
}

.drawer-nav-link.highlight:hover {
    background: var(--btc-secondary, #4a9fd4);
    border-color: var(--btc-secondary, #4a9fd4);
    transform: translateX(4px);
}

.drawer-nav-link.highlight i {
    color: white;
}

.drawer-nav-link i {
    font-size: 1.1rem;
    color: var(--btc-primary);
    width: 24px;
    text-align: center;
}

.drawer-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
}

/* Drawer Footer */
.drawer-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

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

.drawer-theme-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Burger Menu Toggle Button */
.burger-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    z-index: 1001;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
}

.burger-menu-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color-hover, var(--border-color));
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.burger-menu-toggle:active {
    transform: scale(0.95);
}

.burger-icon {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 22px;
    height: 16px;
    position: relative;
}

.burger-line {
    position: absolute;
    width: 22px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.burger-line:nth-child(1) {
    top: 0;
}

.burger-line:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.burger-line:nth-child(3) {
    bottom: 0;
}

/* Burger Animation - Active State */
.burger-menu-toggle.active .burger-line:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.burger-menu-toggle.active .burger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.burger-menu-toggle.active .burger-line:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* Desktop Navigation Container */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Mobile Criteria Tabs (Tablet) */
.mobile-criteria-tabs {
    display: none;
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    padding: 0.75rem 0;
    margin: 0 -1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.mobile-criteria-tabs::-webkit-scrollbar {
    display: none;
}

.mobile-criteria-tabs-inner {
    display: flex;
    gap: 0.5rem;
    padding: 0 1rem;
    min-width: max-content;
}

.mobile-criteria-tab {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.mobile-criteria-tab:hover {
    background: var(--btc-primary);
    color: white;
    border-color: var(--btc-primary);
}

.mobile-criteria-tab.active {
    background: var(--btc-accent);
    color: white;
    border-color: var(--btc-accent);
}

/* Mobile Section Navigation (Phone - Dropdown) */
.mobile-section-nav {
    display: none;
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    padding: 0.75rem 1rem;
    margin: 0 -1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-section-selector {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.mobile-section-selector:focus {
    outline: none;
    border-color: var(--btc-primary);
    box-shadow: 0 0 0 3px rgba(90, 166, 231, 0.1);
}

/* ============================================
   RESPONSIVE BREAKPOINTS - MOBILE NAVIGATION
   ============================================ */

/* Tablet and below - Show burger menu */
@media (max-width: 992px) {
    .desktop-nav {
        display: none;
    }

    .burger-menu-toggle {
        display: flex;
    }

    .header-actions {
        display: flex;
        align-items: center;
    }
}

/* Tablet - Show scrollable tabs for criteria page */
@media (max-width: 992px) and (min-width: 577px) {
    .criteria-nav {
        display: none;
    }

    .mobile-criteria-tabs {
        display: block;
    }
}

/* Phone - Show dropdown for criteria page */
@media (max-width: 576px) {
    .criteria-nav {
        display: none;
    }

    .mobile-criteria-tabs {
        display: none;
    }

    .mobile-section-nav {
        display: block;
    }

    /* Full width drawer on small screens */
    .mobile-nav-drawer {
        max-width: 100%;
    }

    .drawer-nav-link {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }

    .drawer-section-label {
        padding: 0.5rem 1.25rem 0.25rem;
        font-size: 0.65rem;
    }
}

/* Dark mode adjustments for mobile nav */
[data-theme="dark"] .mobile-nav-drawer {
    background: var(--bg-primary);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .drawer-header {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .drawer-footer {
    background: var(--bg-secondary);
    border-top-color: var(--border-color);
}

[data-theme="dark"] .drawer-nav-link:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .mobile-criteria-tab {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .mobile-section-selector {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}