/* ==========================================================================
   FitTrack Pro - Sidebar & Mobile Navigation Controls
   ========================================================================== */

/* Sidebar Navigation */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: transform var(--transition-fast);
}

.sidebar-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 1.35rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
}

.sidebar-nav {
    flex: 1;
    padding: 1.25rem 0.85rem;
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.sidebar-nav a .icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-nav a:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-nav a.active {
    color: #ffffff;
    background: var(--primary-gradient);
    box-shadow: 0 4px 14px var(--primary-glow);
}

.sidebar-footer {
    padding: 1rem 0.85rem;
    border-top: 1px solid var(--border-color);
}

.logout-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.logout-btn:hover {
    background: var(--danger-gradient);
    color: #ffffff;
    border-color: transparent;
}

.admin-link-btn {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.admin-link-btn .icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.admin-link-btn:hover {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.mobile-nav-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--mobile-nav-height);
    background: rgba(18, 23, 34, 0.92);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--border-color);
    z-index: 1000;
    justify-content: space-around;
    align-items: center;
    padding: 0 env(safe-area-inset-right, 0.5rem) 0 env(safe-area-inset-left, 0.5rem);
    box-sizing: border-box;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav-bar.auto-hidden {
    transform: translateY(120%);
    opacity: 0;
    pointer-events: none;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-muted);
    font-size: 0.72rem;
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast);
}

.mobile-nav-item .icon {
    font-size: 1.15rem;
}

.mobile-nav-item.active {
    color: var(--primary);
}

.nav-badge-dot {
    position: absolute;
    top: 4px;
    right: 12px;
    width: 8px;
    height: 8px;
    background: #ef4444;
    border-radius: var(--radius-full);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.9);
    animation: pulseBadge 2s infinite;
}

@keyframes pulseBadge {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.35); opacity: 0.8; }
}

/* Centered Floating Action Button for Mobile Bottom Bar */
.mobile-nav-start-btn {
    position: relative;
    top: -14px;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    background: var(--primary-gradient);
    box-shadow: 0 6px 20px var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    border: 3px solid var(--bg-surface);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
    outline: none;
}

.mobile-nav-start-btn:active {
    transform: scale(0.92);
}

/* Sidebar Overlay for Mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Edge Swipe Indicator for PWA & Mobile */
.swipe-hint {
    display: none;
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 24px;
    height: 48px;
    background: var(--primary-gradient);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    box-shadow: 0 4px 14px var(--primary-glow);
    z-index: 95;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 0.85rem;
    animation: pulseHint 2.5s infinite;
    transition: all var(--transition-fast);
}

.swipe-hint:hover {
    width: 28px;
}

@keyframes pulseHint {
    0%, 100% { opacity: 0.7; transform: translateY(-50%) scale(1); }
    50% { opacity: 1; transform: translateY(-50%) scale(1.08); }
}

/* Responsive Overrides */
@media (max-width: 768px) {
    .swipe-hint {
        display: flex;
    }

    .sidebar {
        bottom: 0;
        transform: translateX(-100%);
        box-shadow: 0 0 30px rgba(0,0,0,0.8);
        z-index: 1050;
    }

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

    .sidebar.open ~ .mobile-nav-bar,
    .sidebar.active ~ .mobile-nav-bar,
    body.sidebar-open .mobile-nav-bar {
        transform: translateY(120%);
        opacity: 0;
        pointer-events: none;
    }

    .sidebar-footer {
        padding: 0.85rem;
        padding-bottom: max(0.85rem, env(safe-area-inset-bottom));
    }

    .sidebar-close {
        display: block;
    }

    /* Kleinere Schrift in der Sidebar auf mobil */
    .sidebar-header h1 {
        font-size: 1.1rem;
    }

    .sidebar-nav a {
        font-size: 0.88rem;
        padding: 0.65rem 0.85rem;
        gap: 0.65rem;
    }

    .sidebar-nav a .icon,
    .admin-link-btn .icon {
        font-size: 0.95rem;
        width: 20px;
    }

    .logout-btn,
    .admin-link-btn {
        font-size: 0.88rem;
        padding: 0.65rem 0.85rem;
        gap: 0.65rem;
    }

    .mobile-nav-bar {
        display: flex;
    }
}

@media (orientation: landscape) {
    .mobile-nav-bar {
        display: none !important;
    }
}