/* Landing Header Styles */
/* Modern design matching the brand system */

/* Reset margins and add padding to body for fixed header */
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    padding-top: 80px;
    margin: 0;
}

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

.landing-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-50);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: all var(--duration-300) var(--ease-out);
}

.landing-nav {
    padding: var(--space-4) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand Logo */
.nav-brand {
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all var(--duration-300) var(--ease-out);
}

.nav-brand:hover {
    transform: translateY(-1px);
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    transition: all var(--duration-300) var(--ease-out);
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all var(--duration-300) var(--ease-out);
}

.logo-icon:hover img {
    transform: scale(1.1);
}

.brand-text {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--brand-dark-blue);
    letter-spacing: -0.02em;
    transition: all var(--duration-300) var(--ease-out);
}

.brand-text:hover {
    color: var(--brand-orange);
    transform: scale(1.05);
}

/* Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all var(--duration-200) var(--ease-out);
}

.nav-toggle:hover {
    background: var(--gray-100);
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 24px;
    height: 18px;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: var(--brand-dark-blue);
    border-radius: 1px;
    transition: all var(--duration-300) var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Navigation Menu */
.navbar-collapse {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    margin-left: 2rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu-left {
    margin-right: auto;
}

.nav-menu-right {
    margin-left: auto;
}

.nav-item {
    display: flex;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
    font-size: var(--text-base);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--duration-200) var(--ease-out);
    position: relative;
}

.nav-link:hover {
    color: var(--brand-orange);
    background: rgba(244, 125, 23, 0.1);
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--brand-orange);
    border-radius: var(--radius-full);
    transition: width var(--duration-300) var(--ease-out);
}

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

/* Navigation Button — uses shared orange button pattern (see .btn-orange in site.css) */
.nav-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.625rem 1.25rem;
    background: var(--brand-orange);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(244, 125, 23, 0.25);
}

.nav-button:hover {
    background: var(--brand-orange-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(244, 125, 23, 0.35);
    color: white;
    text-decoration: none;
}

/* Navigation CTA Button — uses shared orange button pattern (see .btn-orange in site.css) */
.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--brand-orange);
    color: white;
    text-decoration: none;
    border-radius: 0.375rem;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: var(--brand-orange-hover);
    color: white;
    text-decoration: none;
}

.nav-button:active {
    transform: translateY(0);
    background: var(--brand-orange-active);
}

.button-icon {
    display: flex;
    align-items: center;
    transition: transform var(--duration-300) var(--ease-out);
}

.nav-button:hover .button-icon {
    transform: translateX(2px);
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 var(--space-4);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--space-4);
    }

    .nav-toggle {
        display: block;
    }

    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        padding: var(--space-4);
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-4);
        margin-left: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--duration-300) var(--ease-out);
    }

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

    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-2);
    }

    .nav-menu-left,
    .nav-menu-right {
        margin: 0;
        width: 100%;
    }

    .nav-link {
        padding: var(--space-3) var(--space-4);
        text-align: center;
    }

    .nav-button {
        justify-content: center;
        width: 100%;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .brand-text {
        font-size: var(--text-lg);
    }
    
    .nav-container {
        padding: 0 var(--space-3);
    }
}

/* ========================================
   ANIMATIONS
======================================== */

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.landing-header {
    animation: slideDown var(--duration-500) var(--ease-out);
}

/* ========================================
   ACCESSIBILITY
======================================== */

.nav-toggle:focus,
.nav-link:focus,
.nav-button:focus {
    outline: 2px solid var(--brand-orange);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .landing-header {
        background: white;
        border-bottom: 2px solid var(--brand-dark-blue);
    }

    .nav-link:hover {
        background: var(--brand-orange);
        color: white;
    }
}

/* ========================================
   THEME TOGGLE BUTTON
======================================== */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-200) var(--ease-out);
    color: var(--gray-600);
}

.theme-toggle:hover {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--brand-orange);
}

.theme-toggle:focus {
    outline: 2px solid var(--brand-orange);
    outline-offset: 2px;
}

.theme-toggle svg {
    transition: transform var(--duration-300) var(--ease-out);
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

.theme-icon-light.hidden,
.theme-icon-dark.hidden {
    display: none;
}

/* ========================================
   DARK THEME - HEADER
======================================== */

html[data-bs-theme="dark"] .landing-header {
    background: rgba(15, 20, 25, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

html[data-bs-theme="dark"] .brand-text {
    color: var(--text-primary);
}

html[data-bs-theme="dark"] .brand-text:hover {
    color: var(--brand-orange);
}

html[data-bs-theme="dark"] .nav-link {
    color: var(--gray-200);
}

html[data-bs-theme="dark"] .nav-link:hover {
    color: var(--brand-orange);
    background: rgba(244, 125, 23, 0.15);
}

html[data-bs-theme="dark"] .nav-toggle {
    background: transparent;
}

html[data-bs-theme="dark"] .nav-toggle:hover {
    background: var(--hover-color);
}

html[data-bs-theme="dark"] .hamburger-line {
    background: var(--gray-200);
}

html[data-bs-theme="dark"] .theme-toggle {
    border-color: var(--gray-600);
    color: var(--text-secondary);
}

html[data-bs-theme="dark"] .theme-toggle:hover {
    background: var(--hover-color);
    border-color: var(--text-muted);
    color: var(--brand-orange);
}

/* Mobile menu dark theme */
@media (max-width: 768px) {
    html[data-bs-theme="dark"] .navbar-collapse {
        background: var(--bg-primary);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    }
}