/* ========================================
   LAYOUT STYLES
   Header, Footer, Navigation
   ======================================== */

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-darker);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.header-logo:hover {
    color: var(--color-primary);
}

.header-logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
}

/* === NAVIGATION === */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    position: relative;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    text-decoration: none;
    padding: var(--space-sm) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.nav-cta {
    margin-left: var(--space-md);
}

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

.mobile-menu-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--color-darker);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* Mobile Navigation */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--space-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        max-height: calc(100vh - var(--header-height));
        opacity: 1;
        overflow-y: auto;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-gray-200);
    }

    .nav-link::after {
        display: none;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: var(--space-md);
    }

    .nav-cta .btn {
        width: 100%;
    }
}

/* === FOOTER === */
.footer {
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-section h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-white);
}

.footer-section p {
    color: var(--color-gray-300);
    line-height: var(--line-height-relaxed);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-md);
}

.footer-links a {
    color: var(--color-gray-300);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-white);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.footer-social-link:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    color: var(--color-gray-300);
}

.footer-contact-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-xl);
    text-align: center;
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

.footer-bottom-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--color-gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--color-white);
}

/* === ADMIN SIDEBAR === */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--color-gray-50);
}

.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: var(--space-xl);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: var(--z-sticky);
    transition: transform var(--transition-base);
}

.admin-sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: var(--space-xl);
}

.admin-sidebar-logo {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.admin-sidebar-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    margin: 0;
}

.admin-sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.admin-sidebar-menu li {
    margin-bottom: var(--space-sm);
}

.admin-sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    color: var(--color-gray-300);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.admin-sidebar-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.admin-sidebar-link.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.admin-sidebar-icon {
    width: 20px;
    height: 20px;
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-xl);
}

.admin-header {
    background-color: var(--color-white);
    padding: var(--space-lg) var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-header-title {
    font-size: var(--font-size-3xl);
    margin: 0;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.admin-content {
    background-color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

/* Mobile Sidebar */
@media (max-width: 1023px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.active {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-mobile-toggle {
        position: fixed;
        bottom: var(--space-xl);
        right: var(--space-xl);
        width: 60px;
        height: 60px;
        background: var(--gradient-primary);
        color: var(--color-white);
        border: none;
        border-radius: var(--radius-full);
        box-shadow: var(--shadow-xl);
        cursor: pointer;
        z-index: var(--z-fixed);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: var(--font-size-2xl);
    }
}

/* === BREADCRUMBS === */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.breadcrumb-link {
    color: var(--color-gray-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--color-primary);
}

.breadcrumb-separator {
    color: var(--color-gray-400);
}

.breadcrumb-current {
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
}

/* === PAGE SPACING === */
.page-wrapper {
    padding-top: var(--header-height);
    min-height: 100vh;
}

.page-section {
    padding: var(--space-4xl) 0;
}

@media (max-width: 767px) {
    .page-section {
        padding: var(--space-3xl) 0;
    }
}