/* ============================================
   NAVIGATION - Bottom Nav, Tabs, Headers
   ============================================ */

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 0.2px solid var(--color-border-dark);
    background: var(--color-bg-white);
}

.page-header h1 {
    font-family: var(--font-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

/* Dashboard Header with Logo */
.dashboard-header {
    padding: 20px var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, #4A90E2 100%);
    border-bottom: none;
    justify-content: space-between;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-logo {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.header-logo svg {
    width: 32px;
    height: 32px;
}

.header-title-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.page-title {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin: 0;
    line-height: 1.2;
}

.page-subtitle {
    font-family: var(--font-secondary);
    font-size: 14px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    line-height: 1.2;
}

.logout-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.logout-btn:active {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(0.95);
}

@media (max-width: 480px) {
    .page-header {
        padding: 14px 12px;
    }
    
    .dashboard-header {
        padding: 16px 12px;
    }
    
    .header-logo {
        width: 40px;
        height: 40px;
    }
    
    .header-logo svg {
        width: 28px;
        height: 28px;
    }
    
    .page-title {
        font-size: 20px;
    }
    
    .page-subtitle {
        font-size: 12px;
    }
    
    .logout-btn {
        width: 40px;
        height: 40px;
    }
    
    .logout-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .page-header h1 {
        font-size: 18px;
    }
    
    .back-btn {
        padding: 8px;
        margin-right: 8px;
    }
}

.back-btn {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    margin-right: var(--spacing-md);
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

.icon-btn {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
}

/* ============================================
   SEARCH BAR
   ============================================ */
.search-container {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-white);
    border-bottom: 0.2px solid var(--color-border-dark);
    gap: var(--spacing-sm);
}

.search-container i {
    color: var(--color-text-secondary);
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: transparent;
}

.search-input::placeholder {
    color: var(--color-text-secondary);
}

/* ============================================
   TABS
   ============================================ */
.tabs-container {
    display: flex;
    padding: 0 var(--spacing-lg);
    background: var(--color-bg-white);
    border-bottom: 0.2px solid var(--color-border-dark);
    gap: var(--spacing-lg);
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-md) 0;
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition-base);
    white-space: nowrap;
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   BOTTOM NAVIGATION
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--spacing-sm) 0;
    background: var(--color-bg-white);
    border-top: 0.2px solid var(--color-border-dark);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: var(--transition-base);
    flex: 1;
}

.nav-item i {
    font-size: 1.2rem;
}

.nav-item span {
    font-family: var(--font-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-regular);
}

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

.nav-item.active span {
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   FLOATING ACTION BUTTON
   ============================================ */
.floating-action-btn {
    position: fixed;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    border-radius: var(--radius-button);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 100;
    transition: var(--transition-base);
}

.floating-action-btn:hover {
    background: #2a62b5;
    transform: translateX(-50%) translateY(-2px);
    box-shadow: var(--shadow-lg);
}