/* ============================================================
   SummitUSA — styles.css
   Fonts: Syne (display) + DM Sans (body)
   Palette: Navy #0f172a | Blue #1d4ed8 | Accent #f97316
   ============================================================ */

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

:root {
    --navy:      #0f172a;
    --navy-80:   #1e293b;
    --navy-60:   #334155;
    --blue:      #1d4ed8;
    --blue-lt:   #3b82f6;
    --blue-bg:   #eff6ff;
    --accent:    #f97316;
    --accent-lt: #fed7aa;
    --white:     #ffffff;
    --gray-50:   #f8fafc;
    --gray-100:  #f1f5f9;
    --gray-200:  #e2e8f0;
    --gray-400:  #94a3b8;
    --gray-600:  #475569;
    --gray-800:  #1e293b;
    --success:   #16a34a;
    --danger:    #dc2626;

    --font-display: 'Syne', sans-serif;
    --font-body:    'DM Sans', sans-serif;

    --radius-sm:  6px;
    --radius-md:  12px;
    --radius-lg:  20px;
    --radius-xl:  32px;

    --shadow-sm:  0 1px 3px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.04);
    --shadow-md:  0 4px 16px rgba(15,23,42,0.10), 0 2px 6px rgba(15,23,42,0.06);
    --shadow-lg:  0 12px 40px rgba(15,23,42,0.14), 0 4px 12px rgba(15,23,42,0.08);

    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width:  1200px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-body);
    color: var(--navy);
    background: var(--white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }

/* --- Utilities --------------------------------------------- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.eyebrow {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 0.75rem;
}

.section-header {
    max-width: 640px;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--navy);
    margin-bottom: 1rem;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--gray-600);
    line-height: 1.75;
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* --- Buttons ---------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }

.btn-primary {
    background: var(--blue);
    color: var(--white);
    border-color: var(--blue);
}
.btn-primary:hover { background: #1a45c7; border-color: #1a45c7; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-ghost {
    background: transparent;
    color: var(--navy);
    border-color: var(--gray-200);
}
.btn-ghost:hover { border-color: var(--navy); background: var(--gray-50); }

/* Ghost button for use on dark/navy backgrounds */
.btn-ghost-dark {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}
.btn-ghost-dark:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }

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

.btn-white {
    background: var(--white);
    color: var(--blue);
    border-color: var(--white);
}
.btn-white:hover { background: var(--gray-100); transform: translateY(-1px); }

.btn-ghost-white {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}
.btn-ghost-white:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }

/* --- Header ----------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    height: 68px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}
.logo-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.01em;
}
.logo-mark { display: flex; align-items: center; }

.site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-list {
    display: flex;
    gap: 0.25rem;
}
.nav-link {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--gray-600);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--navy); background: var(--gray-100); }

.nav-cta { margin-left: 0.5rem; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
    transition: all var(--transition);
}

/* --- Hero -------------------------------------------------- */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--navy);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
}
.hero-glow {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(29,78,216,0.35) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 5rem;
    align-items: center;
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.hero-content { color: var(--white); }

.hero h1.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.08;
    color: #ffffff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.headline-accent { color: var(--accent); }

.hero-sub {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.72);
    line-height: 1.75;
    margin-bottom: 2.5rem;
    max-width: 480px;
}

.hero .eyebrow { color: var(--accent); }

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero stat cards */
.hero-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 0;
}

.hero-stat-card {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.75rem;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 1.25rem;
    align-items: center;
    backdrop-filter: blur(6px);
    transition: background var(--transition), border-color var(--transition);
}
.hero-stat-card:hover { background: rgba(255,255,255,0.11); border-color: rgba(255,255,255,0.2); }
.hero-stat-card.accent { border-color: rgba(249,115,22,0.4); background: rgba(249,115,22,0.1); }

.stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    grid-row: span 2;
}
.hero-stat-card.accent .stat-num { color: var(--accent); }
.stat-unit { font-size: 1.5rem; font-weight: 700; }

.stat-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.4;
}
.stat-source {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.35);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    align-self: end;
}

/* Scroll hint */
.hero-scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 1;
}
.hero-scroll-hint span {
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.3);
}
.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.3), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 0.8; transform: scaleY(1.1); }
}

/* --- Why Summit -------------------------------------------- */
.why-summit {
    padding: 7rem 0;
    background: var(--gray-50);
}

.props-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.prop-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.prop-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: var(--blue-lt);
}

.prop-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--blue-bg);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
    flex-shrink: 0;
}
.prop-icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--blue);
    flex-shrink: 0;
}

.prop-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 0.5rem;
}
.prop-body {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.65;
}

/* --- Industries -------------------------------------------- */
.industries {
    padding: 7rem 0;
    background: var(--white);
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.industry-card {
    border-radius: var(--radius-md);
    padding: 2rem;
    min-height: 140px;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.industry-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.industry-card--teal   { background: #ccfbf1; }
.industry-card--amber  { background: #fef3c7; }
.industry-card--blue   { background: #dbeafe; }
.industry-card--purple { background: #ede9fe; }
.industry-card--navy   { background: #e0e7ff; }
.industry-card--green  { background: #dcfce7; }
.industry-card--orange { background: #ffedd5; }
.industry-card--coral  { background: #fee2e2; }
.industry-card--slate  { background: #f1f5f9; }

.industry-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.5rem;
}
.industry-desc {
    font-size: 0.85rem;
    color: var(--gray-600);
    line-height: 1.55;
}

/* --- Subscription / Tiers ---------------------------------- */
.subscription {
    padding: 7rem 0;
    background: var(--navy);
}
.subscription .section-header { max-width: 640px; }
.subscription .section-title { color: var(--white); }
.subscription .section-sub { color: rgba(255,255,255,0.6); }
.subscription .eyebrow { color: var(--accent); }

.tiers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.tier-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    position: relative;
    transition: background var(--transition);
}
.tier-card:hover { background: rgba(255,255,255,0.09); }

.tier-card--featured {
    background: var(--blue);
    border-color: var(--blue-lt);
    transform: scale(1.03);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(29,78,216,0.4);
}
.tier-card--featured:hover { background: #1a45c7; }

.tier-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--accent);
    color: var(--white);
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    margin-bottom: 1.25rem;
}

.tier-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.35rem;
}
.tier-tagline {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.55);
    margin-bottom: 1.75rem;
}
.tier-card--featured .tier-tagline { color: rgba(255,255,255,0.8); }

.tier-bullets {
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}
.tier-bullets li {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    padding-left: 1.25rem;
    position: relative;
}
.tier-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.tier-card--featured .tier-bullets li { color: rgba(255,255,255,0.9); }

.tier-cta { width: 100%; justify-content: center; }

/* --- Comparison -------------------------------------------- */
.comparison {
    padding: 7rem 0;
    background: var(--gray-50);
}

.comparison-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    font-size: 0.9rem;
}

.comparison-table thead tr {
    border-bottom: 2px solid var(--gray-200);
}
.comparison-table th {
    padding: 1.25rem 1.5rem;
    text-align: left;
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.col-summit { color: var(--blue) !important; }

.comparison-table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition);
}
.comparison-table tbody tr:last-child { border-bottom: none; }
.comparison-table tbody tr:hover { background: var(--gray-50); }

.comparison-table td { padding: 1.25rem 1.5rem; vertical-align: top; }

.row-label {
    font-weight: 500;
    color: var(--navy);
    width: 20%;
}
.row-managed { color: var(--gray-600); width: 40%; }
.row-summit  { color: var(--navy);     width: 40%; font-weight: 500; }

.indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.6rem;
    vertical-align: middle;
    flex-shrink: 0;
    position: relative;
    top: -1px;
}
.indicator--yes { background: var(--success); }
.indicator--no  { background: var(--gray-400); }

/* --- Testimonials ------------------------------------------ */
.testimonials {
    padding: 7rem 0;
    background: var(--white);
    overflow: hidden;
}

.testimonials-track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Show 3 on desktop, wrap on smaller screens */
@media (min-width: 900px) {
    .testimonials-track .testimonial-card:nth-child(4),
    .testimonials-track .testimonial-card:nth-child(5) {
        grid-column: span 1;
    }
    /* Centre last row of 2 */
    .testimonials-track {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: box-shadow var(--transition), transform var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.testimonial-quote {
    font-size: 0.95rem;
    font-style: italic;
    color: var(--gray-600);
    line-height: 1.75;
    flex: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.author-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
    color: var(--white);
}
.author-avatar--teal   { background: #0d9488; }
.author-avatar--blue   { background: var(--blue); }
.author-avatar--amber  { background: #d97706; }
.author-avatar--purple { background: #7c3aed; }
.author-avatar--navy   { background: var(--navy); }

.author-name {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--navy);
}
.author-role {
    font-size: 0.8rem;
    color: var(--gray-400);
}

/* --- CTA Banner -------------------------------------------- */
.cta-banner {
    position: relative;
    background: var(--navy);
    padding: 6rem 0;
    overflow: hidden;
}
.cta-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 80% 50%, rgba(29,78,216,0.3) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 50%, rgba(249,115,22,0.15) 0%, transparent 50%);
}
.cta-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}
.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}
.cta-sub {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.65);
    max-width: 520px;
    line-height: 1.75;
}
.cta-actions { display: flex; gap: 1rem; flex-direction: column; align-items: flex-start; flex-shrink: 0; }

/* --- Footer ----------------------------------------------- */
.site-footer {
    background: var(--gray-800);
    color: rgba(255,255,255,0.7);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    padding: 5rem 2rem 4rem;
    max-width: var(--max-width);
    margin: 0 auto;
}
.footer-logo .logo-text { color: var(--white); }
.footer-tagline {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.45);
    margin-top: 1rem;
    line-height: 1.7;
    max-width: 280px;
}
.footer-heading {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 1.25rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-links a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-contact { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-contact p { font-size: 0.875rem; color: rgba(255,255,255,0.5); }
.footer-contact a { transition: color var(--transition); }
.footer-contact a:hover { color: var(--white); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
}

/* --- Scroll Reveal ----------------------------------------- */
.reveal-up, .reveal-right {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal-right { transform: translateX(40px); }
.revealed { opacity: 1; transform: none; }

/* --- Responsive -------------------------------------------- */
@media (max-width: 1024px) {
    .props-grid      { grid-template-columns: repeat(2, 1fr); }
    .tiers-grid      { grid-template-columns: 1fr; }
    .tier-card--featured { transform: none; }
    .footer-grid     { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .hero-inner      { grid-template-columns: 1fr; gap: 3rem; padding-top: 3rem; }
    .hero-stats      { display: none; }
    .industry-grid   { grid-template-columns: repeat(2, 1fr); }
    .testimonials-track { grid-template-columns: 1fr; }
    .cta-inner       { flex-direction: column; text-align: center; }
    .cta-actions     { align-items: center; }
    .comparison-table .row-label { display: none; }

    .nav-toggle      { display: flex; }
    .site-nav {
        position: absolute;
        top: 68px;
        left: 0; right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 1rem;
        display: none;
        box-shadow: var(--shadow-md);
    }
    .site-nav.open   { display: flex; }
    .nav-list        { flex-direction: column; }
}

@media (max-width: 480px) {
    .industry-grid   { grid-template-columns: 1fr; }
    .props-grid      { grid-template-columns: 1fr; }
    .footer-grid     { grid-template-columns: 1fr; }
    .footer-bottom-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}