/* ======================================================================
   SURFACE — Landing Page Styles
   Design system: "Bold Variant" (warm intelligence, terracotta accent)
   ====================================================================== */

:root {
    --cream: #FAF7F2;
    --white: #FFFFFF;
    --ink: #2A2520;
    --ink-light: #3A3530;
    --muted: #7A746D;
    --sand: #E8E2D8;

    --terracotta: #C4552D;
    --coral: #E07A5A;
    --blush: #F8EDE8;
    --burnt: #9B3D1E;

    --ai-visibility: #C4552D;
    --competitive: #3D5A80;
    --support: #C48B2D;
    --sage: #5E8B6E;

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    --container: 1120px;
    --section-gap: 0;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    background: var(--cream);
    overflow-x: hidden;
}

/* ---- Utilities ---- */

.section-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-label {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--terracotta);
    margin-bottom: 0.75rem;
}

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--ink);
    max-width: 720px;
    margin-bottom: 3rem;
}

/* ======================================================================
   TOP BAR
   ====================================================================== */

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 2rem;
    transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

.topbar.scrolled {
    background: rgba(250, 247, 242, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--sand);
    padding: 0.75rem 2rem;
}

.wordmark {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.btn-say-hi {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
    background: var(--terracotta);
    border: none;
    padding: 0.55rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease;
}

.btn-say-hi:hover {
    background: var(--burnt);
    transform: translateY(-1px);
}

.btn-say-hi svg {
    transition: transform 0.2s ease;
}

.btn-say-hi:hover svg {
    transform: translateX(2px);
}

/* ======================================================================
   HERO
   ====================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    background: var(--cream);
}

.hero-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--ink);
    margin-bottom: 2rem;
    overflow: hidden;
}

.typewriter-cursor {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: var(--terracotta);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-body {
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    line-height: 1.75;
    color: var(--muted);
}

/* ======================================================================
   HOW IT WORKS
   ====================================================================== */

.how-section {
    padding: 6rem 0;
    background: var(--white);
}

.how-section .section-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 2rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.step-card {
    background: var(--cream);
    border-radius: 12px;
    padding: 2rem;
    border-top: 3px solid var(--accent, var(--terracotta));
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(42, 37, 32, 0.08);
}

.step-num {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent, var(--terracotta));
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
}

.step-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.step-card p {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--muted);
}

/* ======================================================================
   WHAT WE SURFACE
   ====================================================================== */

.surfaces-section {
    padding: 6rem 2rem;
    background: var(--cream);
}

.surfaces-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.surface-block {
    border-radius: 12px;
    padding: 2.25rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.surface-block:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(42, 37, 32, 0.1);
}

.surface-num {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
    opacity: 0.8;
}

.surface-block h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.surface-block p {
    font-size: 0.92rem;
    line-height: 1.65;
}

.surface-ai {
    background: var(--blush);
    color: var(--burnt);
}
.surface-ai .surface-num { color: var(--terracotta); }
.surface-ai h3 { color: var(--burnt); }
.surface-ai p { color: var(--ink-light); }

.surface-comp {
    background: #E8EEF4;
    color: #2A3F5A;
}
.surface-comp .surface-num { color: var(--competitive); }
.surface-comp h3 { color: #2A3F5A; }
.surface-comp p { color: var(--ink-light); }

.surface-support {
    background: #F5EFE0;
    color: #5A4520;
}
.surface-support .surface-num { color: var(--support); }
.surface-support h3 { color: #5A4520; }
.surface-support p { color: var(--ink-light); }

/* ======================================================================
   WHO IT'S FOR
   ====================================================================== */

.for-section {
    padding: 6rem 2rem;
    background: var(--white);
}

.for-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.for-card {
    border: 1px solid var(--sand);
    border-radius: 12px;
    padding: 2rem;
    background: var(--cream);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.for-card:hover {
    border-color: var(--coral);
    box-shadow: 0 8px 24px rgba(42, 37, 32, 0.06);
}

.for-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.for-card p {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--muted);
}

/* ======================================================================
   FOOTER (combined CTA + bar)
   ====================================================================== */

.site-footer {
    background: var(--terracotta);
    color: var(--white);
}

.footer-cta {
    max-width: var(--container);
    margin: 0 auto;
    padding: 5rem 2rem 3.5rem;
    text-align: center;
}

.footer-cta h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.footer-blurb {
    font-size: clamp(1rem, 1.3vw, 1.1rem);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--terracotta);
    background: var(--white);
    border: none;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease;
}

.btn-lg {
    font-size: 1rem;
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
}

.btn-white:hover {
    background: var(--cream);
    transform: translateY(-2px);
}

.btn-white svg {
    transition: transform 0.2s ease;
}

.btn-white:hover svg {
    transform: translateX(3px);
}

.footer-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container);
    margin: 0 auto;
    padding: 1.25rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-wordmark {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    opacity: 0.85;
}

.footer-copy {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* ======================================================================
   MODAL
   ====================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(42, 37, 32, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--white);
    border-radius: 16px;
    max-width: 440px;
    width: 90%;
    padding: 2.5rem;
    position: relative;
    transform: translateY(16px) scale(0.97);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--muted);
    padding: 0.25rem;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.modal-close:hover {
    background: var(--sand);
}

.modal-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.75rem;
}

.modal-body > p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--muted);
    margin-bottom: 1.5rem;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--blush);
    border-radius: 10px;
    text-decoration: none;
    transition: background 0.2s ease;
}

.contact-card:hover {
    background: #F2DDD4;
}

.contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--terracotta);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
}

.contact-value {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
}

.modal-aside {
    margin-top: 1.25rem;
    font-size: 0.82rem;
    color: var(--muted);
    font-style: italic;
}

/* ======================================================================
   SCROLL REVEAL ANIMATION
   ====================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ======================================================================
   RESPONSIVE
   ====================================================================== */

@media (max-width: 860px) {
    .steps-grid,
    .surfaces-grid {
        grid-template-columns: 1fr;
    }

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

    .hero-headline {
        /* height set by JS lockHeadlineHeight() */
    }
}

@media (max-width: 600px) {
    .topbar {
        padding: 1rem 1.25rem;
    }

    .topbar.scrolled {
        padding: 0.6rem 1.25rem;
    }

    .hero {
        padding: 6rem 1.25rem 3rem;
        min-height: auto;
    }

    .hero-headline {
        font-size: 1.75rem;
        /* height set by JS lockHeadlineHeight() */
    }

    .hero-body {
        font-size: 1rem;
    }

    .how-section,
    .surfaces-section,
    .for-section {
        padding: 4rem 1.25rem;
    }

    .section-heading {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }

    .step-card,
    .surface-block,
    .for-card {
        padding: 1.5rem;
    }

    .footer-cta {
        padding: 3.5rem 1.25rem 2.5rem;
    }

    .footer-cta h2 {
        font-size: 1.75rem;
    }

    .modal {
        padding: 2rem 1.5rem;
    }
}