/* ============================================
   HEADER COMPONENT STYLES
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-soft);
    z-index: var(--z-header);
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

/* Global image safety */
img {
    max-width: 100%;
    height: auto;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.logo img {
    height: 100px;
    width: 100px;
    display: block;
    object-fit: contain;
}

.logo:hover {
    filter: brightness(1.15);
    transform: scale(1.04);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: #6B7280;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover {
    color: #111827;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--primary-cyan);
}

.nav-links a.active::after {
    width: 100%;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Login Icon */
.login-icon-wrapper {
    position: relative;
    z-index: 9999;
    /* Keep profile icon above mobile menu */
}

.login-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--primary);
    font-size: 1.2rem;
}

.login-icon:hover {
    background: rgba(59, 130, 246, 0.18);
    border-color: var(--primary);
    box-shadow: 0 0 16px var(--glow-blue);
    transform: scale(1.08);
}

.login-icon.logged-in {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: white;
}

/* Login Popup */
.login-popup {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: #ffffff;
    border: 1.5px solid #E5E7EB;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-width: 250px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(59,130,246,0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.login-popup.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.login-popup::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 15px;
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-left: 1px solid #E5E7EB;
    border-top: 1px solid #E5E7EB;
    transform: rotate(45deg);
}

.popup-content h4 {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 1.1rem;
    color: #111827;
}

.popup-content p {
    margin: 0 0 var(--spacing-md) 0;
    font-size: 0.9rem;
    color: #6B7280;
}

.popup-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.popup-actions .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.875rem;
    flex: 1;
}

.popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.popup-close:hover {
    color: #111827;
}

/* User Menu (when logged in) */
.user-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: #ffffff;
    border: 1.5px solid #E5E7EB;
    border-radius: var(--radius-md);
    min-width: 200px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.10);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 100;
    overflow: hidden;
}

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

.user-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 15px;
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-left: 1px solid #E5E7EB;
    border-top: 1px solid #E5E7EB;
    transform: rotate(45deg);
}

.user-menu-item {
    display: block;
    padding: 0.875rem 1.25rem;
    color: #374151;
    text-decoration: none;
    transition: all var(--transition-fast);
    border-bottom: 1px solid #F3F4F6;
}

.user-menu-item:last-child {
    border-bottom: none;
}

.user-menu-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #111827;
}

.user-menu-item.logout {
    color: var(--accent-error);
}

.user-menu-item.logout:hover {
    background: rgba(255, 51, 102, 0.1);
}

/* CTA Button */
.header .btn-primary {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
    white-space: nowrap;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary-cyan);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 968px) {
    .nav-links {
        gap: var(--spacing-md);
    }

    .nav-links a {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    /* Position login icon in header on mobile */
    .login-icon-wrapper {
        position: absolute;
        right: 60px;
        /* Space for hamburger menu */
        top: 50%;
        transform: translateY(-50%);
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: #ffffff;
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        gap: 0;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        border-top: 1px solid #e5e7eb;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        z-index: 1000;
        /* Below profile icon (9999) */
    }

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

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav-links a {
        width: 100%;
        padding: 1.125rem 1.5rem;
        border-bottom: 1px solid #f3f4f6;
        color: #374151;
        font-size: 1.05rem;
        font-weight: 500;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        margin: 0 -1.5rem;
        width: calc(100% + 3rem);
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a i {
        width: 1.5rem;
        text-align: center;
        font-size: 1.1rem;
        opacity: 0.9;
        color: #6366f1;
    }

    .nav-links a.active {
        color: #6366f1;
        background: rgba(99, 102, 241, 0.08);
        border-right: 3px solid #6366f1;
    }

    .nav-links a:hover {
        color: #6366f1;
        background: rgba(99, 102, 241, 0.05);
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        border-top: 1px solid #e5e7eb;
    }

    /* Hide CTA button on mobile — nav links already provide navigation */
    .header-actions .btn-primary {
        display: none;
    }

    .header .btn-primary {
        flex: 1;
    }

    /* Suppress floating user-menu on mobile — links are shown inline in .nav instead */
    .user-menu {
        display: none !important;
    }

    /* Hide the profile icon wrapper from inside the .nav panel on mobile */
    .nav .login-icon-wrapper {
        display: none;
    }

    /* Mobile-only flat profile nav links injected by header.js */
    .mobile-nav-profile {
        display: flex;
        flex-direction: column;
        width: 100%;
        margin-top: 0;
        border-top: 1px solid #f3f4f6;
        padding-top: 0.25rem;
    }

    .mobile-nav-profile a {
        display: flex;
        width: 100%;
        padding: 1.125rem 1.5rem;
        color: #374151;
        text-decoration: none;
        font-weight: 500;
        font-size: 1.05rem;
        border-bottom: 1px solid #f3f4f6;
        border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        transition: all var(--transition-fast);
        align-items: center;
        gap: 0.875rem;
        margin: 0 -1.5rem;
        width: calc(100% + 3rem);
    }

    .mobile-nav-profile a:hover {
        color: #6366f1;
        background: rgba(99, 102, 241, 0.08);
    }

    .mobile-nav-profile a.logout {
        color: #ef4444;
    }

    .mobile-nav-profile a.logout:hover {
        color: #dc2626;
        background: rgba(239, 68, 68, 0.1);
    }

    .mobile-nav-profile a i {
        width: 1.5rem;
        text-align: center;
        font-size: 1.1rem;
        color: inherit;
        opacity: 0.9;
    }
}

/* end @media (max-width: 768px) */

@media (max-width: 480px) {
    .header-container {
        padding: 0.875rem var(--spacing-sm);
    }

    .logo img {
        height: 30px;
    }

    .login-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .login-icon-wrapper {
        right: 50px;
        /* Adjust for smaller hamburger spacing */
    }
}

/* Desktop: hide the mobile-only flat nav block injected by header.js */
@media (min-width: 769px) {
    .mobile-nav-profile {
        display: none !important;
    }
}