/* ==========================================================================
   Design tokens — mirrored from front/src/styles/main.css :root
   ========================================================================== */

:root {
    --color-canvas: #0b0c0e;
    --text-on-canvas: rgba(255, 255, 255, 0.92);
    --text-on-canvas-muted: rgba(255, 255, 255, 0.68);
    --surface-on-canvas: rgba(255, 255, 255, 0.08);
    --surface-on-canvas-strong: rgba(255, 255, 255, 0.16);
    --border-on-canvas: rgba(255, 255, 255, 0.16);

    --color-surface: #ffffff;
    --color-surface-alt: #f4f5f6;
    --color-ink: #16181d;
    --color-muted: #6b7280;
    --color-border: #e4e5e7;

    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-soft: rgba(37, 99, 235, 0.12);
    --color-like: #ef4444;

    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 18px;
    --radius-pill: 999px;

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.18);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.22);
    --shadow-lg: 0 24px 56px rgba(0, 0, 0, 0.32);

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --dur: 180ms;
}

/* ==========================================================================
   Base
   ========================================================================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-ui);
    background: var(--color-surface);
    color: var(--color-ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease),
        border-color var(--dur) var(--ease);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--color-accent);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
}

.btn-ghost-on-canvas {
    background: transparent;
    color: var(--text-on-canvas);
    border-color: var(--border-on-canvas);
}

.btn-ghost-on-canvas:hover {
    background: var(--surface-on-canvas);
}

/* ==========================================================================
   Nav
   ========================================================================== */

.nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 12, 14, 0.72);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-on-canvas);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav-logo {
    width: 28px;
    height: 28px;
    filter: brightness(0) invert(1);
}

.nav-wordmark {
    color: var(--text-on-canvas);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-on-canvas-muted);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    transition: color var(--dur) var(--ease);
}

.nav-links a:hover {
    color: var(--text-on-canvas);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    border-radius: var(--radius-pill);
    background: var(--surface-on-canvas);
    border: 1px solid var(--border-on-canvas);
}

.lang-btn {
    appearance: none;
    border: none;
    background: transparent;
    color: var(--text-on-canvas-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    padding: 5px 9px;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.lang-btn:hover {
    color: var(--text-on-canvas);
}

.lang-btn.is-active {
    background: var(--color-accent);
    color: #ffffff;
}

.lang-switcher-mobile {
    align-self: flex-start;
    margin-top: 10px;
}

.nav-toggle {
    display: inline-flex;
    background: transparent;
    border: 1px solid var(--border-on-canvas);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    color: var(--text-on-canvas);
    cursor: pointer;
}

.nav-mobile-panel {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 0 24px 16px;
}

.nav-mobile-panel.is-open {
    display: flex;
}

.nav-mobile-panel a {
    color: var(--text-on-canvas-muted);
    text-decoration: none;
    padding: 10px 0;
    font-size: 0.95rem;
    border-top: 1px solid var(--border-on-canvas);
}

@media (min-width: 860px) {
    .nav-links {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

    .nav-mobile-panel {
        display: none !important;
    }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
    background: var(--color-canvas);
    color: var(--text-on-canvas);
    padding: 72px 0 96px;
}

.hero-inner {
    display: grid;
    gap: 48px;
    align-items: center;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    background: var(--surface-on-canvas);
    border: 1px solid var(--border-on-canvas);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-on-canvas-muted);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2.1rem, 5vw, 3.4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin: 0 0 20px;
}

.hero p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-on-canvas-muted);
    max-width: 46ch;
    margin: 0 0 32px;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

/* Phone mockup — CSS-only device frame around a mocked property card */
.phone {
    width: 260px;
    height: 540px;
    border-radius: 40px;
    background: #16181d;
    border: 8px solid #202329;
    box-shadow: var(--shadow-lg);
    padding: 10px;
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 8px;
    border-radius: var(--radius-pill);
    background: rgba(0, 0, 0, 0.6);
}

.phone-screen {
    width: 100%;
    height: 100%;
    border-radius: 30px;
    overflow: hidden;
    background: linear-gradient(160deg, #1d2330 0%, #0b0c0e 60%, #101625 100%);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px 16px;
    gap: 10px;
}

.phone-chip {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}

.phone-title {
    color: #fff;
    font-weight: 700;
    font-size: 1.05rem;
}

.phone-sub {
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.8rem;
}

.phone-rail {
    position: absolute;
    right: 12px;
    bottom: 90px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: center;
}

.phone-rail span {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.14);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

@media (min-width: 860px) {
    .hero-inner {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

/* ==========================================================================
   Features
   ========================================================================== */

.section {
    padding: 88px 0;
}

.section-alt {
    background: var(--color-surface-alt);
}

.section-heading {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

.section-heading .eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: 12px;
}

.section-heading h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    letter-spacing: -0.01em;
    margin: 0 0 12px;
}

.section-heading p {
    color: var(--color-muted);
    line-height: 1.6;
    margin: 0;
}

.feature-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.feature-card h3 {
    margin: 0 0 8px;
    font-size: 1.05rem;
}

.feature-card p {
    margin: 0;
    color: var(--color-muted);
    line-height: 1.55;
    font-size: 0.92rem;
}

.feature-tag {
    display: inline-block;
    margin-top: 14px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-muted);
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 3px 8px;
}

@media (min-width: 640px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 960px) {
    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ==========================================================================
   How it works
   ========================================================================== */

.steps {
    display: grid;
    gap: 24px;
    grid-template-columns: 1fr;
    counter-reset: step;
}

.step {
    position: relative;
    padding: 28px 24px 24px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
}

.step::before {
    counter-increment: step;
    content: counter(step);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.step h3 {
    margin: 0 0 8px;
    font-size: 1rem;
}

.step p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

@media (min-width: 860px) {
    .steps {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==========================================================================
   CTA band
   ========================================================================== */

.cta-band {
    background: var(--color-canvas);
    color: var(--text-on-canvas);
    text-align: center;
    padding: 72px 0;
}

.cta-band h2 {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    margin: 0 0 12px;
    letter-spacing: -0.01em;
}

.cta-band p {
    color: var(--text-on-canvas-muted);
    max-width: 46ch;
    margin: 0 auto 32px;
    line-height: 1.6;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--color-canvas);
    color: var(--text-on-canvas-muted);
    border-top: 1px solid var(--border-on-canvas);
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-logo {
    width: 20px;
    height: 20px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-on-canvas-muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--text-on-canvas);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.45);
}

@media (min-width: 860px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ==========================================================================
   Reveal-on-scroll
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}

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