/* ============================================
   Mountain Snow — Stylesheet
   Confident Corporate | Midnight Blue + Mint
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --color-midnight: #0a1f35;
    --color-midnight-light: #1a3a5c;
    --color-midnight-dark: #061524;
    --color-blue: #1a5276;
    --color-blue-light: #2980b9;
    --color-mint: #a8e6cf;
    --color-mint-dark: #7ec8a8;
    --color-mint-light: #d4f5e5;
    --color-cream: #f8faf9;
    --color-sage: #f0f7f4;
    --color-white: #ffffff;
    --color-text: #1a1a2e;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;
    --color-border: #e2e8f0;
    --color-border-light: #f0f4f2;

    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(10, 31, 53, 0.08);
    --shadow-md: 0 4px 16px rgba(10, 31, 53, 0.10);
    --shadow-lg: 0 8px 32px rgba(10, 31, 53, 0.12);
    --shadow-xl: 0 16px 48px rgba(10, 31, 53, 0.14);

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* --- Utility --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.text-accent {
    color: var(--color-mint-dark);
}

.title-light .text-accent {
    color: var(--color-mint);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-mint);
    color: var(--color-midnight);
    padding: 0.8125rem 1.75rem;
}

.btn-primary:hover {
    background-color: var(--color-mint-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
    padding: 0.75rem 1.6875rem;
}

.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-accent {
    background-color: var(--color-mint);
    color: var(--color-midnight);
    padding: 0.8125rem 1.75rem;
}

.btn-accent:hover {
    background-color: var(--color-mint-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    font-size: 1rem;
    padding: 1rem 2rem;
}

/* --- Section --- */
.section {
    padding: var(--space-4xl) 0;
}

.section-header {
    margin-bottom: var(--space-3xl);
}

.section-header--center {
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-blue);
    background-color: var(--color-mint-light);
    padding: 0.375rem 0.875rem;
    border-radius: 50px;
    margin-bottom: var(--space-md);
}

.tag-light {
    color: var(--color-mint);
    background-color: rgba(168, 230, 207, 0.15);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-midnight);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

.title-light .section-title {
    color: var(--color-white);
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    padding: var(--space-md) 0;
    gap: var(--space-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-midnight);
    flex-shrink: 0;
}

.logo-light {
    color: var(--color-white);
}

.logo-text {
    letter-spacing: -0.01em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    margin-left: auto;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    background-color: var(--color-midnight);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger {
    position: relative;
    width: 20px;
    height: 2px;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-midnight);
    background-color: var(--color-sage);
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-blue);
    font-weight: 600;
}

.nav-phone:hover {
    color: var(--color-midnight);
    background-color: var(--color-mint-light);
}

.nav-cta {
    display: none;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--color-midnight);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(6, 21, 36, 0.92) 0%,
        rgba(10, 31, 53, 0.85) 40%,
        rgba(26, 82, 118, 0.70) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 820px;
    padding: var(--space-4xl) var(--space-lg);
}

.hero-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-mint);
    background-color: rgba(168, 230, 207, 0.12);
    border: 1px solid rgba(168, 230, 207, 0.25);
    padding: 0.5rem 1.125rem;
    border-radius: 50px;
    margin-bottom: var(--space-xl);
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5.5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero-headline .text-accent {
    color: var(--color-mint);
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.75;
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-mint);
}

.stat-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.55);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    color: rgba(255, 255, 255, 0.5);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-image-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 3/2;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about-content .lead {
    font-size: 1.125rem;
    color: var(--color-text);
    line-height: 1.8;
    font-weight: 400;
}

.about-content p {
    color: var(--color-text-light);
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-sm);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-weight: 500;
    color: var(--color-text);
}

.feature-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   PRODUCTS
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.product-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.product-img-wrap {
    overflow: hidden;
    aspect-ratio: 10/7;
}

.product-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-img-wrap img {
    transform: scale(1.05);
}

.product-card-content {
    padding: var(--space-xl);
}

.product-card-title {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-midnight);
    margin-bottom: var(--space-sm);
}

.product-card-desc {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ============================================
   QUALITY
   ============================================ */
.quality {
    background-color: var(--color-white);
}

.quality-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.quality-image-side {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.quality-image-side img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 6/7;
}

.quality-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.quality-lead {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.quality-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.quality-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.quality-item-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(168, 230, 207, 0.15);
    border-radius: var(--radius-md);
}

.quality-item-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-midnight);
    margin-bottom: 0.25rem;
}

.quality-item-desc {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.65;
}

/* ============================================
   VISIT / CONTACT
   ============================================ */
.visit {
    background-color: var(--color-midnight);
}

.visit-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: stretch;
}

.visit-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding: var(--space-2xl) 0;
}

.visit-desc {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.title-light .section-title {
    color: var(--color-white);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.contact-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(168, 230, 207, 0.1);
    border: 1px solid rgba(168, 230, 207, 0.2);
    border-radius: var(--radius-md);
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 0.25rem;
}

.contact-value {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-white);
    line-height: 1.6;
}

.contact-link {
    color: var(--color-mint);
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-mint-light);
}

.visit-cta {
    margin-top: var(--space-sm);
}

.visit-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 400px;
    box-shadow: var(--shadow-xl);
}

.map-placeholder {
    width: 100%;
    height: 100%;
    min-height: 400px;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background-color: var(--color-midnight-dark);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    max-width: 280px;
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.55);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-mint);
}

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
}

.footer-phone {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--color-mint);
    transition: color var(--transition-fast);
}

.footer-phone:hover {
    color: var(--color-mint-light);
}

.footer-bottom {
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.35);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .about-grid,
    .quality-layout {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .quality-image-side {
        max-height: 400px;
    }

    .visit-layout {
        grid-template-columns: 1fr;
    }

    .visit-map {
        min-height: 300px;
    }

    .map-placeholder {
        min-height: 300px;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
        --space-3xl: 3rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: min(320px, 85vw);
        height: 100vh;
        height: 100dvh;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--space-4xl) + var(--space-xl)) var(--space-xl) var(--space-xl);
        gap: var(--space-md);
        box-shadow: var(--shadow-xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: 999;
        overflow-y: auto;
    }

    .nav-menu.is-open {
        transform: translateX(0);
    }

    .nav-links {
        flex-direction: column;
        gap: var(--space-xs);
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem var(--space-md);
        font-size: 1rem;
    }

    .nav-phone {
        display: none;
    }

    .nav-cta {
        display: inline-flex;
        width: 100%;
        text-align: center;
        justify-content: center;
        margin-top: var(--space-md);
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: var(--space-lg);
    }

    .stat-number {
        font-size: 1.25rem;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer-brand {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .hero-stat-divider {
        width: 40px;
        height: 1px;
    }
}

/* --- Mobile overlay --- */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.nav-overlay.is-visible {
    display: block;
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .scroll-indicator { animation: none; opacity: 0.5; }
}