/* ============================================
   SNAPSHOT HEALTH - GLOBAL HEADER STYLES
   ============================================ */

/* ============================================
   NAVIGATION
   ============================================ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.875rem 2rem;
    background: rgba(7, 11, 18, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.625rem;
}

.logo-mark {
    height: 42px;
    width: auto;
}

.logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.0625rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-cta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    color: var(--bg-darkest);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 30px rgba(255, 255, 255, 0.2);
}

.nav-cta svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   MOBILE HAMBURGER BUTTON
   ============================================ */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger-line:nth-child(1) {
    margin-bottom: 6px;
}

.hamburger-line:nth-child(2) {
    margin-bottom: 6px;
}

/* Hamburger animation when open */
.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   MOBILE MENU OVERLAY & PANEL
   ============================================ */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(7, 11, 18, 0.6);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 380px;
    height: 100vh;
    height: 100dvh;
    background: #E8F6F8;
    z-index: 1001;
    overflow-y: auto;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    border-left: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 20px 0 0 20px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active {
    transform: translateX(0);
}

/* Mobile Menu Header with Logo */
.mobile-menu-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid rgba(0, 180, 216, 0.15);
    background: #E8F6F8;
}

.mobile-menu-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.mobile-menu-logo .logo-mark {
    height: 48px;
    width: auto;
}

.mobile-menu-logo .logo-text {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #00B4D8 0%, #00D4AA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mobile Menu Navigation */
.mobile-menu-nav {
    padding: 1.5rem 0;
    background: #E8F6F8;
}

.mobile-menu-item {
    border-bottom: 1px solid rgba(0, 180, 216, 0.12);
    background: #E8F6F8;
}

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

.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.75rem;
    color: #0A1120;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.2s ease;
    background: #E8F6F8;
}

.mobile-menu-link:hover {
    background: rgba(0, 180, 216, 0.08);
}

.mobile-menu-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #00B4D8;
}

.mobile-menu-icon svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 1.75;
    fill: none;
}

/* Expandable Menu Categories */
.mobile-menu-category {
    cursor: pointer;
}

.mobile-menu-category .mobile-menu-link {
    justify-content: flex-start;
}

.mobile-menu-arrow {
    margin-left: auto;
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.mobile-menu-arrow svg {
    width: 100%;
    height: 100%;
    stroke: #4A5568;
    stroke-width: 2;
    fill: none;
}

.mobile-menu-category.open .mobile-menu-arrow {
    transform: rotate(180deg);
}

.mobile-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(0, 180, 216, 0.04);
}

.mobile-menu-category.open .mobile-submenu {
    max-height: 300px;
}

.mobile-submenu-link {
    display: block;
    padding: 0.75rem 1.75rem 0.75rem 4rem;
    color: #4A5568;
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s ease, background 0.2s ease;
}

.mobile-submenu-link::before {
    content: '–';
    margin-right: 0.5rem;
    color: #00B4D8;
}

.mobile-submenu-link:hover {
    color: #0A1120;
    background: rgba(0, 180, 216, 0.08);
}

/* External Link Icon */
.external-link-icon {
    width: 16px;
    height: 16px;
    margin-left: 0.5rem;
    opacity: 0.6;
}

.external-link-icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

/* Mobile Menu CTA */
.mobile-menu-cta {
    padding: 1.5rem 1.75rem;
    border-top: 1px solid rgba(0, 180, 216, 0.15);
    background: transparent;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mobile-menu-cta .btn {
    width: 100%;
    justify-content: center;
}

/* ============================================
   HEADER RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
    /* Show hamburger, hide desktop nav */
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
    }

   .nav-cta {
        display: none;
    }

    nav .btn-primary {
        display: none;
    }

    .mobile-menu-overlay {
        display: block;
    }

    .mobile-menu {
        display: block;
    }

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

@media (max-width: 480px) {
    nav {
        padding: 0.75rem 1rem;
    }
}

/* ==============================================
   PATIENT LOGIN BUTTON STYLES
   ============================================== */
.nav-cta-outline {
    background: transparent;
    border: 1px solid var(--primary);
    margin-left: 10px;
}

.nav-cta-outline:hover {
    background: rgba(0, 212, 170, 0.1);
}

.mobile-menu-cta-outline {
    background: transparent;
    border: 1px solid var(--primary);
    width: 100%;
    text-align: center;
    margin-top: 10px;
    display: block;
    padding: 12px 24px;
    border-radius: 8px;
    color: var(--primary);
    text-decoration: none;
}

.mobile-menu-cta-outline:hover {
    background: rgba(0, 212, 170, 0.1);
}