/* ==========================================================================
   SnowLink Marketing Site - Shared Design System
   Palette, logo/wordmark, nav, hero, cards, benefit rows, CTA band,
   pricing, contact form, footer, responsive.
   ========================================================================== */

:root {
    --snowlink-navy: #0F172A;      /* Deep professional navy */
    --snowlink-navy-2: #1E293B;    /* Slightly lighter navy */
    --snowlink-blue: #2563EB;      /* Bright action blue */
    --snowlink-blue-dark: #1D4ED8; /* Hover blue */
    --snowlink-steel: #4682b4;     /* Steel blue (wordmark) */
    --snowlink-light-bg: #F8FAFC;  /* Ultra-clean background */
    --snowlink-border: #E2E8F0;    /* Subtle dividers */
    --text-main: #1E293B;          /* Dark slate text */
    --text-muted: #64748B;         /* Soft gray secondary text */
    --text-faint: #94A3B8;         /* Faintest gray */

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #ffffff;
    color: var(--text-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Logo / Wordmark
   -------------------------------------------------------------------------- */
.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 0.5rem;
}

.logo-image {
    height: 40px;
    width: 40px;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--snowlink-steel);
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.logo-i {
    background: linear-gradient(to bottom, red 35%, var(--snowlink-steel) 35%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.logo-tagline {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-faint);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-top: -2px;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--snowlink-border);
    z-index: 1000;
    padding: 0.75rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0 auto 0 3rem;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--snowlink-blue);
}

.nav-cta-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-login {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-login:hover { color: var(--snowlink-blue); }

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: 0.3s;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
    line-height: 1.2;
}

.btn-primary {
    background: var(--snowlink-blue);
    color: #fff;
    border-color: var(--snowlink-blue);
}
.btn-primary:hover {
    background: var(--snowlink-blue-dark);
    border-color: var(--snowlink-blue-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline {
    background: transparent;
    color: var(--snowlink-blue);
    border-color: var(--snowlink-blue);
}
.btn-outline:hover {
    background: var(--snowlink-blue);
    color: #fff;
}

.btn-white {
    background: #fff;
    color: var(--snowlink-navy);
    border-color: #fff;
}
.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline-white:hover {
    background: #fff;
    color: var(--snowlink-navy);
    border-color: #fff;
}

.btn-large {
    padding: 0.95rem 2rem;
    font-size: 1.05rem;
}

.btn-block { width: 100%; display: block; }

/* --------------------------------------------------------------------------
   Hero (curved navy, Yeti-style)
   -------------------------------------------------------------------------- */
.hero {
    background-color: var(--snowlink-navy);
    color: #fff;
    padding: 90px 20px 130px;
    text-align: center;
    clip-path: ellipse(150% 100% at 50% 0%);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.08;
    margin: 0 0 1.25rem;
    letter-spacing: -0.02em;
}

.hero .subtitle {
    font-size: 1.25rem;
    max-width: 760px;
    margin: 0 auto 2.5rem;
    color: #CBD5E1;
    font-weight: 300;
}

.hero .subtitle strong { color: #fff; font-weight: 600; }

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.eyebrow {
    display: inline-block;
    color: var(--snowlink-blue);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
}

.hero .eyebrow { color: #93C5FD; }

/* Page hero (smaller, for interior pages) */
.page-hero {
    background-color: var(--snowlink-navy);
    color: #fff;
    padding: 70px 20px 90px;
    text-align: center;
    clip-path: ellipse(160% 100% at 50% 0%);
}

.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
}

.page-hero p {
    font-size: 1.15rem;
    color: #CBD5E1;
    max-width: 680px;
    margin: 0 auto;
    font-weight: 300;
}

/* --------------------------------------------------------------------------
   Generic section + headers
   -------------------------------------------------------------------------- */
.section { padding: 80px 0; }
.section-light { background: var(--snowlink-light-bg); }
.section-white { background: #fff; }

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 700;
    margin: 0 0 1rem;
    color: var(--snowlink-navy);
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0;
}

/* --------------------------------------------------------------------------
   Feature cards grid
   -------------------------------------------------------------------------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
}

.feature-card {
    background: #fff;
    padding: 2.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--snowlink-border);
    transition: all 0.3s ease;
    text-align: left;
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--snowlink-blue);
    transform: translateY(-4px);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--snowlink-blue), var(--snowlink-steel));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.feature-icon svg {
    width: 26px;
    height: 26px;
    color: #fff;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin: 0 0 0.6rem;
    color: var(--snowlink-navy);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 1rem;
    margin: 0;
}

/* --------------------------------------------------------------------------
   Benefit / advantage alternating rows
   -------------------------------------------------------------------------- */
.benefits {
    display: flex;
    flex-direction: column;
    gap: 4.5rem;
}

.benefit-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.benefit-item.reverse .benefit-visual { order: -1; }

.benefit-content h3 {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0 0 1rem;
    color: var(--snowlink-navy);
    letter-spacing: -0.01em;
}

.benefit-content p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin: 0 0 1rem;
}

.benefit-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.benefit-list li {
    position: relative;
    padding: 0.4rem 0 0.4rem 1.9rem;
    color: var(--text-main);
}

.benefit-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.7rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--snowlink-blue);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
    background-size: 12px;
    background-repeat: no-repeat;
    background-position: center;
}

.benefit-visual {
    background: linear-gradient(135deg, var(--snowlink-navy), var(--snowlink-steel));
    border-radius: 24px;
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.benefit-visual svg {
    width: 96px;
    height: 96px;
    color: rgba(255, 255, 255, 0.92);
}

.benefit-visual.has-image {
    padding: 0;
    overflow: hidden;
    display: block;
}

.benefit-visual.has-image img,
.benefit-visual.has-image video {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 280px;
    object-fit: cover;
}

/* --------------------------------------------------------------------------
   Detailed product feature rows
   -------------------------------------------------------------------------- */
.feature-block {
    padding: 56px 0;
    border-bottom: 1px solid var(--snowlink-border);
}
.feature-block:last-child { border-bottom: none; }

.feature-block h2 {
    font-size: 1.75rem;
    color: var(--snowlink-navy);
    margin: 0 0 0.5rem;
}

.feature-block > .container > p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 720px;
    margin: 0 0 2rem;
}

.sub-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.sub-feature h4 {
    font-size: 1.1rem;
    color: var(--snowlink-navy);
    margin: 0 0 0.4rem;
}

.sub-feature p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.98rem;
}

/* --------------------------------------------------------------------------
   CTA band
   -------------------------------------------------------------------------- */
.cta-band {
    padding: 90px 0;
    background: linear-gradient(135deg, var(--snowlink-blue), var(--snowlink-steel));
    text-align: center;
    color: #fff;
}

.cta-band h2 {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 700;
    margin: 0 0 1rem;
    letter-spacing: -0.02em;
}

.cta-band p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.92);
    margin: 0 0 2rem;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

.cta-band .hero-cta { margin-top: 0; }

/* --------------------------------------------------------------------------
   Pricing
   -------------------------------------------------------------------------- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1080px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    background: #fff;
    border: 2px solid var(--snowlink-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

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

.pricing-card.featured {
    border-color: var(--snowlink-blue);
    box-shadow: var(--shadow-lg);
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--snowlink-blue);
    color: #fff;
    padding: 0.35rem 1.25rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.plan-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--snowlink-navy);
    margin: 0 0 0.35rem;
}

.plan-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin: 0 0 1.5rem;
    min-height: 2.6em;
}

.plan-price {
    margin-bottom: 1.5rem;
}

.plan-price .amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--snowlink-navy);
    letter-spacing: -0.02em;
}

.plan-price .currency {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--snowlink-navy);
    vertical-align: top;
    line-height: 2.4;
}

.plan-price .period {
    font-size: 1rem;
    color: var(--text-muted);
}

.plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    flex-grow: 1;
}

.plan-features li {
    position: relative;
    padding: 0.6rem 0 0.6rem 1.75rem;
    border-bottom: 1px solid var(--snowlink-border);
    color: var(--text-main);
    font-size: 0.95rem;
}

.plan-features li:last-child { border-bottom: none; }

.plan-features li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.85rem;
    width: 16px;
    height: 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

.pricing-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 2.5rem;
}

/* --------------------------------------------------------------------------
   Contact / demo form
   -------------------------------------------------------------------------- */
.form-wrapper {
    max-width: 560px;
    margin: 0 auto;
    padding: 36px;
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--snowlink-border);
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--snowlink-border);
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
    color: var(--text-main);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-group input:focus,
.form-group textarea:focus { border-color: var(--snowlink-blue); }

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-faint); }

.form-message {
    margin-top: 15px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}
.form-message.success { display: block; background: #D1FAE5; color: #065F46; }
.form-message.error { display: block; background: #FEE2E2; color: #991B1B; }

button:disabled { opacity: 0.7; cursor: not-allowed; }

/* --------------------------------------------------------------------------
   Modal
   -------------------------------------------------------------------------- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}
.modal-overlay.active { display: flex; }

.modal {
    background: #fff;
    padding: 48px;
    border-radius: 24px;
    text-align: center;
    max-width: 420px;
    margin: 20px;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #10B981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.modal-icon.warning { background: linear-gradient(135deg, #F59E0B, #D97706); }
.modal-icon svg { width: 36px; height: 36px; color: #fff; }

.modal h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--snowlink-navy);
    margin: 0 0 12px;
}

.modal p {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0 0 28px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--snowlink-navy);
    color: #fff;
    padding: 64px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-i {
    background: linear-gradient(to bottom, red 35%, #fff 35%);
    -webkit-background-clip: text;
    background-clip: text;
}
.footer-brand p {
    color: var(--text-faint);
    font-size: 0.95rem;
    margin: 1rem 0 1.5rem;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 1rem;
    color: #fff;
}

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

.footer-col ul li { margin-bottom: 0.65rem; }

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.footer-col ul li a:hover { color: var(--snowlink-blue); }

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 0.5rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s;
}
.social-link:hover { background: var(--snowlink-blue); transform: translateY(-3px); }
.social-link svg { width: 18px; height: 18px; color: #fff; }

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-faint);
    font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 968px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: #fff;
        padding: 1.5rem 24px;
        margin: 0;
        gap: 1.25rem;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--snowlink-border);
    }
    .nav-links.active { display: flex; }

    .mobile-menu-toggle { display: flex; }

    .mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
    .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }

    .benefit-item,
    .benefit-item.reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .benefit-item.reverse .benefit-visual { order: 0; }

    .footer-top { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 600px) {
    .hero { padding: 60px 20px 100px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; }
    .nav-login { display: none; }
}