/* ==========================================================================
   SM Explorer — global styles
   Design tokens, navigation, footer, and the scroll-reveal utility classes
   shared by every page. Page-specific styles (hero, sections) live in the
   view files that use them.
   ========================================================================== */

:root {
    --navy-900: #0a2647;
    --navy-800: #0d3266;
    --navy-700: #123a75;
    --red-600: #e2231a;
    --red-700: #c31a12;
    --ink-700: #2b3648;
    --ink-500: #5b6779;
    --bg-soft: #f4f7fb;
    --bg-white: #ffffff;
    --line: #e5eaf1;
    --font-display: 'Poppins', 'Segoe UI', sans-serif;
    --font-body: 'Inter', 'Segoe UI', sans-serif;
    --container: 1200px;
    --radius: 10px;
    --shadow-card: 0 10px 30px -12px rgba(10, 38, 71, 0.18);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--ink-700);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    color: var(--navy-900);
    margin: 0;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    padding: 14px 28px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

    .btn svg {
        transition: transform 0.25s var(--ease);
    }

    .btn:hover svg {
        transform: translateX(4px);
    }

.btn--primary {
    background: var(--red-600);
    color: #fff;
    box-shadow: 0 12px 24px -10px rgba(226, 35, 26, 0.55);
}

    .btn--primary:hover {
        background: var(--red-700);
        transform: translateY(-2px);
    }

.btn--outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.65);
}

    .btn--outline:hover {
        background: rgba(255,255,255,0.12);
        transform: translateY(-2px);
    }

/* ---------- eyebrow / section heading ---------- */
.eyebrow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--navy-900);
}

    .eyebrow::before, .eyebrow::after {
        content: '';
        width: 34px;
        height: 2px;
        background: var(--red-600);
    }

.section-title {
    text-align: center;
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    margin-top: 10px;
}

.section-sub {
    text-align: center;
    color: var(--ink-500);
    margin-top: 8px;
    font-size: 0.98rem;
}

/* ==========================================================================
   Navigation

   NOTE: the open/expanded state everywhere below uses the ".sm-open" class.
   This must match exactly what the JS in _Layout.cshtml toggles
   (menu.classList.toggle('sm-open') and dropdown.classList.toggle('sm-open')).
   Previously this file used ".is-open", which the JS never applies — that
   mismatch is why the "About" submenu wasn't appearing on mobile.
   ========================================================================== */
.sm-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow 0.3s var(--ease);
}

    .sm-navbar.is-scrolled {
        box-shadow: 0 8px 24px -16px rgba(10,38,71,0.35);
    }

.sm-navbar__inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.sm-navbar__brand img {
    height: 52px;
    width: auto;
}

.sm-navbar__menu {
    display: flex;
}

.sm-navbar__links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.sm-navlink {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.03em;
    color: #1c1f24;
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 2px;
    position: relative;
}

    .sm-navlink::after {
        content: '';
        position: absolute;
        left: 0;
        right: 0;
        bottom: -2px;
        height: 2px;
        background: var(--red-600);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.25s var(--ease);
    }

    .sm-navlink:hover::after, .sm-navlink.is-active::after {
        transform: scaleX(1);
    }

    .sm-navlink.is-active {
        color: var(--red-600);
    }

    .sm-navlink svg {
        transition: transform 0.2s var(--ease);
    }

.sm-navbar__dropdown {
    position: relative;
}

    .sm-navbar__dropdown:hover .sm-navlink--dropdown svg,
    .sm-navbar__dropdown.sm-open .sm-navlink--dropdown svg {
        transform: rotate(180deg);
    }

.sm-dropdown__panel {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 10px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}

.sm-navbar__dropdown:hover .sm-dropdown__panel,
.sm-navbar__dropdown.sm-open .sm-dropdown__panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.sm-dropdown__panel li a {
    display: block;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.92rem;
    color: var(--ink-700);
    transition: background 0.2s, color 0.2s;
}

    .sm-dropdown__panel li a:hover {
        background: var(--bg-soft);
        color: var(--red-600);
    }

.sm-navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

    .sm-navbar__toggle span {
        width: 24px;
        height: 2px;
        background: var(--navy-900);
        transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
    }

    .sm-navbar__toggle.sm-open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .sm-navbar__toggle.sm-open span:nth-child(2) {
        opacity: 0;
    }

    .sm-navbar__toggle.sm-open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

@media (max-width: 900px) {
    .sm-navbar__toggle {
        display: flex;
    }

    .sm-navbar__menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--line);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s var(--ease);
    }

        .sm-navbar__menu.sm-open {
            max-height: 520px;
        }

    .sm-navbar__links {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 24px 18px;
    }

        .sm-navbar__links > li {
            border-bottom: 1px solid var(--line);
        }

    .sm-navlink {
        width: 100%;
        padding: 14px 0;
        justify-content: space-between;
    }

    .sm-dropdown__panel {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        padding: 0 0 10px 14px;
        transform: none;
    }

    .sm-navbar__dropdown.sm-open .sm-dropdown__panel {
        display: block;
    }
}

/* ==========================================================================
   Scroll-reveal utilities (JS toggles .is-visible via IntersectionObserver)
   ========================================================================== */
.reveal {
    opacity: 0;
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

.reveal-up {
    transform: translateY(36px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-zoom {
    transform: scale(0.92);
}

.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.reveal-stagger > * {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal-stagger.is-visible > * {
    opacity: 1;
    transform: none;
}

    .reveal-stagger.is-visible > *:nth-child(1) {
        transition-delay: 0.05s;
    }

    .reveal-stagger.is-visible > *:nth-child(2) {
        transition-delay: 0.15s;
    }

    .reveal-stagger.is-visible > *:nth-child(3) {
        transition-delay: 0.25s;
    }

    .reveal-stagger.is-visible > *:nth-child(4) {
        transition-delay: 0.35s;
    }

    .reveal-stagger.is-visible > *:nth-child(5) {
        transition-delay: 0.45s;
    }

    .reveal-stagger.is-visible > *:nth-child(6) {
        transition-delay: 0.55s;
    }

@media (prefers-reduced-motion: reduce) {
    .reveal, .reveal-stagger > *, .parallax-layer {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.sm-footer {
    background: var(--navy-900);
    color: rgba(255,255,255,0.82);
    margin-top: 0;
}

.sm-footer__inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 32px;
    padding-top: 56px;
    padding-bottom: 32px;
}

.sm-footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

    .sm-footer__logo img {
        height: 40px;
    }

    .sm-footer__logo span {
        font-family: var(--font-display);
        font-weight: 700;
        letter-spacing: 0.04em;
        color: #fff;
    }

.sm-footer__col p {
    line-height: 1.6;
    font-size: 0.92rem;
    margin: 0;
    color: rgba(255,255,255,0.65);
}

.sm-footer__col h4 {
    color: #fff;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.sm-footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

    .sm-footer__col ul li a {
        font-size: 0.92rem;
        transition: color 0.2s;
    }

        .sm-footer__col ul li a:hover {
            color: var(--red-600);
        }

.sm-footer__sub a {
    color: rgba(255,255,255,0.6);
    font-size: 0.86rem !important;
}

.sm-footer__contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
}

.sm-footer__contact svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--red-600);
}

.sm-footer__social {
    display: flex;
    gap: 10px;
    margin-top: 18px;
}

    .sm-footer__social a {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: rgba(255,255,255,0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-display);
        font-weight: 700;
        font-size: 0.85rem;
        transition: background 0.2s, transform 0.2s;
    }

        .sm-footer__social a:hover {
            background: var(--red-600);
            transform: translateY(-2px);
        }

.sm-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    text-align: center;
    padding: 18px 24px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.55);
}

@media (max-width: 900px) {
    .sm-footer__inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 560px) {
    .sm-footer__inner {
        grid-template-columns: 1fr;
    }
}