/* ==========================================================================
   CarePDF - Header Styles (Optimized & Responsive)
   ========================================================================== */

/* ==========================================================================
   1. Navbar Base
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: box-shadow 0.2s ease, background 0.2s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}

/* ==========================================================================
   2. Logo / Brand
   ========================================================================== */

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-600) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family-display);
    font-size: 1.125rem;
    font-weight: 800;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.logo-text {
    font-family: var(--font-family-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

/* ==========================================================================
   3. Navigation Menu
   ========================================================================== */

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: flex-end;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-links li a {
    display: flex;
    align-items: center;
    padding: 8px 14px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.navbar-links li a:hover {
    color: var(--gray-900);
    background: var(--gray-100);
}

.navbar-links li a.active {
    color: var(--primary);
    background: var(--primary-50);
}

/* ==========================================================================
   4. Navbar Actions
   ========================================================================== */

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 8px;
    padding-left: 16px;
    border-left: 1px solid var(--gray-200);
}

/* ==========================================================================
   5. Language Dropdown
   ========================================================================== */

.language-dropdown {
    position: relative;
}

.nav-lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    padding: 8px 12px;
    border-radius: 8px;
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.nav-lang-btn:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-lang-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.nav-lang-btn .chevron-down {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}

.language-dropdown.open .chevron-down {
    transform: rotate(180deg);
}

.dropdown-content {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transition: all 0.2s ease;
    z-index: 1001;
    max-height: 320px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.dropdown-content.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.dropdown-content a {
    display: block;
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.15s ease;
}

.dropdown-content a:first-child {
    border-radius: 11px 11px 0 0;
}

.dropdown-content a:last-child {
    border-radius: 0 0 11px 11px;
}

.dropdown-content a:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.dropdown-content a.active {
    background: var(--primary-50);
    color: var(--primary);
    font-weight: 500;
}

/* Scrollbar for dropdown */
.dropdown-content::-webkit-scrollbar {
    width: 6px;
}

.dropdown-content::-webkit-scrollbar-track {
    background: transparent;
}

.dropdown-content::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

/* ==========================================================================
   6. Action Buttons
   ========================================================================== */

.navbar-actions .btn {
    font-size: 0.875rem;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.navbar-actions .btn-ghost {
    color: var(--gray-600);
}

.navbar-actions .btn-ghost:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.navbar-actions .btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.navbar-actions .btn-primary:hover {
    background: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* ==========================================================================
   7. Mobile Menu Button
   ========================================================================== */

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    z-index: 1002;
    transition: background 0.15s ease;
}

.mobile-menu-btn:hover {
    background: var(--gray-100);
}

.mobile-menu-btn .bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all 0.25s ease;
    transform-origin: center;
}

.mobile-menu-btn.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-btn.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   8. Tablet Breakpoint (1024px)
   ========================================================================== */

@media (max-width: 1024px) {
    .navbar-links {
        gap: 2px;
    }
    
    .navbar-links li a {
        padding: 8px 10px;
        font-size: 0.875rem;
    }
    
    .navbar-actions {
        gap: 6px;
        padding-left: 12px;
    }
}

/* ==========================================================================
   9. Mobile Breakpoint (768px)
   ========================================================================== */

@media (max-width: 768px) {
    .navbar-content {
        height: 60px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .navbar-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #ffffff;
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 20px;
        gap: 8px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.25s ease;
        overflow-y: auto;
        overscroll-behavior: contain;
        z-index: 999;
    }

    .navbar-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
    }

    .navbar-links {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .navbar-links li a {
        padding: 14px 16px;
        font-size: 1rem;
        border-radius: 12px;
        justify-content: flex-start;
    }

    .navbar-links li a:hover,
    .navbar-links li a.active {
        background: var(--gray-100);
    }
    
    .navbar-links li a.active {
        background: var(--primary-50);
        color: var(--primary);
    }

    .navbar-actions {
        flex-direction: column;
        gap: 10px;
        margin-left: 0;
        padding-left: 0;
        padding-top: 16px;
        margin-top: 8px;
        border-left: none;
        border-top: 1px solid var(--gray-200);
    }

    .navbar-actions .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 20px;
        font-size: 1rem;
        border-radius: 12px;
    }

    .language-dropdown {
        width: 100%;
    }

    .nav-lang-btn {
        width: 100%;
        justify-content: center;
        padding: 14px 16px;
        background: var(--gray-100);
        border-radius: 12px;
        font-size: 1rem;
    }

    .dropdown-content {
        position: static;
        width: 100%;
        margin-top: 8px;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 1px solid var(--gray-200);
        display: none;
        max-height: 200px;
    }

    .dropdown-content.show {
        display: block;
    }
    
    .dropdown-content a {
        padding: 12px 16px;
        text-align: center;
    }
}

/* ==========================================================================
   10. Small Mobile (480px)
   ========================================================================== */

@media (max-width: 480px) {
    .navbar-content {
        height: 56px;
    }
    
    .navbar-menu {
        top: 56px;
        padding: 16px;
    }

    .logo-text {
        font-size: 1.125rem;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
        border-radius: 8px;
    }
    
    .mobile-menu-btn {
        width: 40px;
        height: 40px;
    }
    
    .mobile-menu-btn .bar {
        width: 20px;
    }
}

/* ==========================================================================
   11. Dark Mode
   ========================================================================== */

[data-theme="dark"] .navbar {
    background: rgba(17, 17, 27, 0.98);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .navbar.scrolled {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .logo-text {
    color: #ffffff;
}

[data-theme="dark"] .navbar-links li a {
    color: var(--gray-400);
}

[data-theme="dark"] .navbar-links li a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .navbar-links li a.active {
    color: var(--primary-400);
    background: rgba(239, 68, 68, 0.15);
}

[data-theme="dark"] .navbar-actions {
    border-left-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .nav-lang-btn {
    color: var(--gray-400);
}

[data-theme="dark"] .nav-lang-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

[data-theme="dark"] .dropdown-content {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

[data-theme="dark"] .dropdown-content a {
    color: var(--gray-300);
}

[data-theme="dark"] .dropdown-content a:hover {
    background: var(--gray-700);
    color: #ffffff;
}

[data-theme="dark"] .dropdown-content a.active {
    background: rgba(239, 68, 68, 0.15);
    color: var(--primary-400);
}

[data-theme="dark"] .mobile-menu-btn .bar {
    background: var(--gray-400);
}

[data-theme="dark"] .mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
    [data-theme="dark"] .navbar-menu {
        background: var(--gray-900);
    }
    
    [data-theme="dark"] .navbar-actions {
        border-top-color: rgba(255, 255, 255, 0.1);
    }
    
    [data-theme="dark"] .nav-lang-btn {
        background: var(--gray-800);
    }
    
    [data-theme="dark"] .dropdown-content {
        border-color: var(--gray-700);
    }
}

/* ==========================================================================
   12. RTL Support
   ========================================================================== */

[dir="rtl"] .navbar-menu {
    flex-direction: row-reverse;
}

[dir="rtl"] .navbar-actions {
    flex-direction: row-reverse;
    margin-left: 0;
    margin-right: 8px;
    padding-left: 0;
    padding-right: 16px;
    border-left: none;
    border-right: 1px solid var(--gray-200);
}

[dir="rtl"] .dropdown-content {
    right: auto;
    left: 0;
}

@media (max-width: 768px) {
    [dir="rtl"] .navbar-actions {
        margin-right: 0;
        padding-right: 0;
        border-right: none;
    }
}

/* ==========================================================================
   13. Print Styles
   ========================================================================== */

@media print {
    .navbar {
        display: none;
    }
}