/* ============================================
   Reef — reeflang.dev
   Design ported from the Reef Website comp.
   The markup is inline-styled; this sheet carries
   the reset, base type, link + hover states, the
   header/mobile-nav chrome, and responsive stacking.
   ============================================ */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: #161826;
    color: #e9e9ed;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: #b5abfc; text-decoration: none; }
a:hover { color: #d2cefd; }

::selection { background: rgba(145, 132, 217, 0.32); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

.rule {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(63,66,80,.9) 12%, rgba(63,66,80,.9) 88%, transparent);
}

/* Muted nav / footer links */
.lnk { color: #c8c9d2; transition: color .15s; }
.lnk:hover { color: #e9e9ed; }

/* Hover states (ported from style-hover) */
.btn-fill { transition: background .15s; }
.btn-fill:hover { background: #a99ee6; }

.btn-outline { transition: background .15s, box-shadow .15s, color .15s; }
.btn-outline:hover { background: rgba(145,132,217,.12); }

.btn-ghost { transition: box-shadow .15s, color .15s; }
.btn-ghost:hover { box-shadow: inset 0 0 0 1px #5d5294; color: #e9e9ed; }

.ex-card { transition: box-shadow .15s; }
.ex-card:hover { box-shadow: 0 0 0 1px #5d5294; }

/* Keyboard focus */
a:focus-visible, button:focus-visible {
    outline: 2px solid #9184d9;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---- Header / nav ---- */
.site-header { position: relative; border-bottom: 1px solid rgba(63,66,80,.5); }
.nav-collapse {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1 1 auto;
    min-width: 0;
}

/* Hamburger — hidden on desktop */
.mobile-menu-toggle {
    display: none;
    margin-left: auto;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid #3f424d;
    border-radius: 8px;
    cursor: pointer;
    position: relative;
}
.mobile-menu-toggle .hamburger,
.mobile-menu-toggle .hamburger::before,
.mobile-menu-toggle .hamburger::after {
    position: absolute;
    left: 50%;
    width: 18px;
    height: 2px;
    background: #c8c9d2;
    transform: translateX(-50%);
    transition: transform .2s, opacity .2s;
}
.mobile-menu-toggle .hamburger { top: 50%; transform: translate(-50%, -50%); }
.mobile-menu-toggle .hamburger::before { content: ""; top: -6px; }
.mobile-menu-toggle .hamburger::after { content: ""; top: 6px; }
.mobile-menu-toggle[aria-expanded="true"] .hamburger { background: transparent; }
.mobile-menu-toggle[aria-expanded="true"] .hamburger::before { top: 0; transform: translateX(-50%) rotate(45deg); background: #e9e9ed; }
.mobile-menu-toggle[aria-expanded="true"] .hamburger::after { top: 0; transform: translateX(-50%) rotate(-45deg); background: #e9e9ed; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .wrap { padding: 0 22px; }
    .hero-grid { grid-template-columns: 1fr !important; gap: 40px !important; padding: 56px 0 !important; }
    .hero-logo { height: 96px !important; }
    .overview-grid { grid-template-columns: 1fr !important; gap: 20px !important; }
    .two-col { grid-template-columns: 1fr !important; }
    .three-col { grid-template-columns: 1fr 1fr !important; }
    .license-grid { grid-template-columns: 1fr !important; gap: 28px !important; }
    .usecase-grid { grid-template-columns: 1fr !important; }
    h1 { font-size: 38px !important; }

    .mobile-menu-toggle { display: block; }
    .nav-collapse {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 74px;
        z-index: 40;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 10px 22px 20px;
        background: #1b1e2b;
        border-bottom: 1px solid #2a2d3d;
        box-shadow: 0 24px 60px rgba(0,0,0,.4);
    }
    .nav-collapse.active { display: flex; }
    .main-nav {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0 !important;
    }
    .main-nav .nav-link {
        padding: 13px 4px;
        border-bottom: 1px solid #2a2d3d;
        font-size: 15px !important;
    }
    .header-actions {
        margin-left: 0 !important;
        margin-top: 16px;
        justify-content: flex-start;
    }
}

@media (max-width: 560px) {
    .three-col { grid-template-columns: 1fr !important; }
    .install-cmd { font-size: 12px !important; flex-wrap: wrap; }
}