/* ============================================================
   QualityMax Landing Nav — shared across all marketing pages
   Self-contained: only depends on the brand vars in landing.css
   :root (--primary-color, --text-dark, --font-sans).
   For pages that don't load landing.css, the brand vars are
   inlined here as fallbacks.
   ============================================================ */

/* Brand var fallbacks — only kick in if the page doesn't load landing.css */
:root {
    --primary-color: var(--primary-color, #7c6cf0);
    --font-sans: var(--font-sans, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
}

/* === Header === */
.qm-nav-host .header,
body > .header {
    background: rgba(9, 11, 20, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header > .container,
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 16px;
    gap: 1rem;
    min-width: 0;
    max-width: 1200px;
    margin: 0 auto;
}

.header .logo {
    flex-shrink: 0;
}

.header .logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.header .logo-img {
    height: 32px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
}

.header .nav {
    display: flex;
    gap: 1rem;
    align-items: center;
    min-width: 0;
    flex: 1;
    justify-content: space-between;
}

.header .nav-links,
.header .nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.header .nav a {
    text-decoration: none;
    color: #e8eaf0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 400;
    font-size: 0.9rem;
    transition: color 0.25s;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.header .nav a:hover {
    color: #7c6cf0;
}

/* === CTAs === */
.header .cta-btn-small {
    background: #7c6cf0;
    color: white !important;
    padding: 0.45rem 1.25rem;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.25s ease;
    text-decoration: none;
}

.header .cta-btn-small:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(124, 108, 240, 0.3);
    background: #8b7df5;
    color: white !important;
}

.header .login-link {
    color: #e8eaf0;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    text-decoration: none;
    padding: 0.45rem 1.1rem;
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    transition: all 0.25s ease;
}

.header .login-link:hover {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* === Theme toggle === */
.header .theme-toggle {
    color: rgba(255, 255, 255, 0.9);
}
.theme-toggle-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
    opacity: 1;
    transition: opacity 0.25s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.theme-toggle-icon--hidden {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(-90deg) scale(0.5);
    pointer-events: none;
}
@media (prefers-reduced-motion: reduce) {
    .theme-toggle, .theme-toggle-icon { transition: none !important; }
}

/* === Hamburger === */
.header .hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 101;
}

.header .hamburger span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: #e8eaf0;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.header .hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.header .hamburger.open span:nth-child(2) { opacity: 0; }
.header .hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* === Compact header before mobile === */
@media (max-width: 1100px) {
    .header .container { padding: 0.65rem 12px; gap: 0.75rem; }
    .header .logo-img { height: 28px; max-width: 120px; }
    .header .nav { gap: 0.75rem; }
    .header .nav-links, .header .nav-controls { gap: 0.75rem; }
    .header .nav a { font-size: 0.85rem; }
    .header .cta-btn-small { padding: 0.4rem 1rem; font-size: 0.85rem; }
    .header .login-link { padding: 0.4rem 1rem; font-size: 0.85rem; }
}

/* === Mobile: hamburger menu === */
@media (max-width: 900px) {
    .header .hamburger { display: flex; }
    .header .container { flex-wrap: wrap; padding: 0.65rem 12px; }
    .header .logo { flex: 1; min-height: 44px; display: flex; align-items: center; }
    .header .logo-link { min-height: 44px; display: flex; align-items: center; }
    .header .logo-img { height: 36px; max-width: 150px; }
    .header .nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: center;
        gap: 0.6rem;
        padding: 0.75rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .header .nav.open { display: flex; }
    .header .nav-links {
        width: 100%;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    .header .nav-controls {
        width: 100%;
        justify-content: center;
        gap: 0.75rem;
        flex-wrap: wrap;
    }
}

/* === Light theme overrides for the nav === */
html[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.92) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

html[data-theme="light"] .header .nav a {
    color: #374151;
}

html[data-theme="light"] .header .nav a:hover {
    color: #7c6cf0;
}

html[data-theme="light"] .header .login-link {
    color: #374151;
    border-color: rgba(0, 0, 0, 0.15);
}

html[data-theme="light"] .header .login-link:hover {
    color: #0f0e17 !important;
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.25);
}

html[data-theme="light"] .header .hamburger span {
    background: #374151;
}

html[data-theme="light"] .header .nav.open {
    border-top-color: rgba(0, 0, 0, 0.08);
}