/* =============================================================================
   Striking Site — landing page stylesheet
   BKY design system: dark slate #0F172A, sky accent #0369A1, Fira Sans.
   ========================================================================== */

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

:root {
    --slate-950: #020617;
    --slate-900: #0F172A;
    --slate-800: #1E293B;
    --slate-700: #334155;
    --slate-500: #64748B;
    --slate-400: #94A3B8;
    --slate-200: #E2E8F0;
    --slate-100: #F1F5F9;
    --slate-50:  #F8FAFC;

    --sky-700: #0369A1;
    --sky-600: #0284C7;
    --sky-500: #0EA5E9;
    --sky-400: #38BDF8;

    --white: #ffffff;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 1px 3px rgba(15,23,42,.08), 0 8px 24px rgba(15,23,42,.06);
    --shadow-lg: 0 20px 45px -12px rgba(15,23,42,.25);
    --maxw: 1120px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Fira Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--slate-800);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--sky-700); text-decoration: none; }
a:hover { color: var(--sky-600); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: .5rem; font-weight: 600; font-size: 1rem;
    padding: .85rem 1.6rem; border-radius: 999px; border: 2px solid transparent;
    cursor: pointer; transition: transform .12s ease, box-shadow .15s ease, background .15s ease;
    line-height: 1;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--sky-700); color: var(--white); box-shadow: 0 6px 18px rgba(3,105,161,.35); }
.btn-primary:hover { background: var(--sky-600); color: var(--white); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.4); }
.btn-ghost:hover { background: rgba(255,255,255,.1); color: var(--white); }
.btn-outline { background: transparent; color: var(--sky-700); border-color: var(--sky-700); padding: .6rem 1.2rem; font-size: .95rem; }
.btn-outline:hover { background: var(--sky-700); color: var(--white); }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(15,23,42,.92); backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(148,163,184,.15);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: .6rem; color: var(--white); font-weight: 700; }
.brand:hover { color: var(--white); }
.brand-badge {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: 9px;
    background: linear-gradient(135deg, var(--sky-600), var(--sky-700));
    color: var(--white); font-weight: 800; font-size: .95rem;
}
.brand-text { font-size: 1.1rem; letter-spacing: -.01em; }
.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 1.4rem; cursor: pointer; }
.nav-links { list-style: none; display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { color: var(--slate-200); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--white); }
.nav-cta {
    background: var(--sky-700); color: var(--white) !important;
    padding: .55rem 1.1rem; border-radius: 999px; font-weight: 600;
}
.nav-cta:hover { background: var(--sky-600); }

/* ---------- Hero ---------- */
.hero {
    background:
        radial-gradient(1000px 500px at 80% -10%, rgba(14,165,233,.25), transparent 60%),
        radial-gradient(800px 400px at 0% 0%, rgba(3,105,161,.20), transparent 55%),
        linear-gradient(160deg, var(--slate-900), var(--slate-950));
    color: var(--white);
    padding: 96px 0 104px;
}
.hero-inner { max-width: 860px; }
.hero-eyebrow {
    text-transform: uppercase; letter-spacing: .12em; font-size: .78rem;
    font-weight: 600; color: var(--sky-400); margin-bottom: 1rem;
}
.hero-title { font-size: clamp(2rem, 5vw, 3.35rem); font-weight: 800; line-height: 1.1; letter-spacing: -.02em; }
.hero-accent { display: block; margin-top: .5rem; color: var(--sky-400); }
.hero-lead { margin-top: 1.4rem; font-size: 1.18rem; color: var(--slate-200); max-width: 640px; }
.hero-cta { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-badges { list-style: none; display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 2rem; color: var(--slate-200); font-weight: 500; font-size: .95rem; }
.hero-badges li { color: var(--slate-100); }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.sec-eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 600; color: var(--sky-700); margin-bottom: .6rem; }
.sec-title { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 800; color: var(--slate-900); letter-spacing: -.02em; }
.sec-sub { margin-top: .7rem; color: var(--slate-500); font-size: 1.08rem; max-width: 560px; }

/* ---------- How it works ---------- */
.section-how { background: var(--slate-50); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2.5rem; }
.step-card { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 2rem 1.8rem; box-shadow: var(--shadow); }
.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 46px; height: 46px; border-radius: 12px;
    background: linear-gradient(135deg, var(--sky-600), var(--sky-700));
    color: var(--white); font-weight: 800; font-size: 1.25rem; margin-bottom: 1.1rem;
}
.step-title { font-size: 1.22rem; font-weight: 700; color: var(--slate-900); margin-bottom: .5rem; }
.step-text { color: var(--slate-500); }

/* ---------- Showcase ---------- */
.showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; margin-top: 2.5rem; }
.show-card {
    display: flex; flex-direction: column; background: var(--white);
    border: 1px solid var(--slate-200); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .2s ease; color: inherit;
}
.show-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); color: inherit; }
.show-thumb { aspect-ratio: 800 / 562; background: var(--slate-100); overflow: hidden; }
.show-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; display: block; }
.show-meta { padding: 1.1rem 1.3rem 1.4rem; }
.show-name { font-size: 1.1rem; font-weight: 700; color: var(--slate-900); }
.show-niche { color: var(--slate-500); font-size: .92rem; margin-top: .15rem; }
.show-link { display: inline-block; margin-top: .7rem; color: var(--sky-700); font-weight: 600; font-size: .92rem; }

/* ---------- Pricing ---------- */
.section-pricing { background: var(--slate-900); color: var(--white); }
.section-pricing .sec-title { color: var(--white); }
.section-pricing .sec-eyebrow { color: var(--sky-400); }
.price-card {
    position: relative; max-width: 460px; margin: 2.5rem auto 0;
    background: var(--white); color: var(--slate-800);
    border-radius: var(--radius); padding: 2.6rem 2.2rem 2.4rem; box-shadow: var(--shadow-lg);
}
.price-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: linear-gradient(135deg, var(--sky-500), var(--sky-700));
    color: var(--white); font-weight: 700; font-size: .82rem;
    padding: .45rem 1.1rem; border-radius: 999px; letter-spacing: .02em; white-space: nowrap;
}
.price-head { display: flex; align-items: baseline; justify-content: center; gap: .35rem; margin-top: .6rem; }
.price-amount { font-size: 3.6rem; font-weight: 800; color: var(--slate-900); letter-spacing: -.03em; }
.price-per { font-size: 1.15rem; color: var(--slate-500); font-weight: 600; }
.price-sub { text-align: center; color: var(--slate-500); margin-top: .4rem; }
.price-features { list-style: none; margin: 1.8rem 0; display: grid; gap: .75rem; }
.price-features li { position: relative; padding-left: 1.9rem; color: var(--slate-700); }
.price-features li::before {
    content: "✓"; position: absolute; left: 0; top: 0;
    color: var(--sky-700); font-weight: 800;
    background: rgba(3,105,161,.1); width: 22px; height: 22px; border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center; font-size: .8rem;
}

/* ---------- Developer ---------- */
.section-developer { background: var(--slate-50); }
.dev-grid { display: grid; grid-template-columns: 260px 1fr; gap: 2.8rem; align-items: start; margin-top: 2.5rem; }
.dev-photo img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); display: block; }
.dev-name { font-size: 1.7rem; font-weight: 800; color: var(--slate-900); }
.dev-role { color: var(--sky-700); font-weight: 600; margin-bottom: 1.1rem; }
.dev-text p { color: var(--slate-600); margin-bottom: 1rem; }
.dev-text strong { color: var(--slate-900); font-weight: 700; }
.dev-links { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: .4rem; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-top: 3rem; }
.stat-card { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius-sm); padding: 1.6rem 1.2rem; text-align: center; box-shadow: var(--shadow); }
.stat-num { font-size: 1.9rem; font-weight: 800; color: var(--sky-700); letter-spacing: -.02em; }
.stat-label { color: var(--slate-500); font-size: .9rem; margin-top: .3rem; }

/* ---------- Contact ---------- */
.section-contact { background: linear-gradient(160deg, var(--slate-900), var(--slate-950)); color: var(--white); }
.section-contact .sec-title { color: var(--white); }
.section-contact .sec-eyebrow { color: var(--sky-400); }
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-lead { color: var(--slate-200); font-size: 1.1rem; margin-top: 1rem; max-width: 420px; }
.contact-copy .btn-primary { margin-top: 1.6rem; max-width: 420px; }
.contact-points { list-style: none; margin-top: 1.6rem; display: grid; gap: .7rem; color: var(--slate-100); font-weight: 500; }
.contact-form-wrap { background: var(--white); border-radius: var(--radius); padding: 2rem 1.9rem; box-shadow: var(--shadow-lg); }
.contact-form-lead { color: var(--slate-600); font-size: .95rem; margin: 0 0 1.3rem; font-weight: 500; }
.contact-form .field { margin-bottom: 1.1rem; }
.contact-form label { display: block; font-weight: 600; color: var(--slate-700); font-size: .9rem; margin-bottom: .35rem; }
.contact-form input, .contact-form textarea {
    width: 100%; padding: .8rem .95rem; border: 1.5px solid var(--slate-200);
    border-radius: var(--radius-sm); font: inherit; color: var(--slate-800); background: var(--slate-50);
    transition: border-color .15s ease, box-shadow .15s ease;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--sky-600); background: var(--white);
    box-shadow: 0 0 0 3px rgba(3,105,161,.15);
}
.contact-form textarea { resize: vertical; }
.field-error { color: #dc2626; font-size: .82rem; margin-top: .3rem; }
.form-errors { background: #fef2f2; color: #b91c1c; padding: .7rem .9rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: .9rem; }
.form-fineprint { color: var(--slate-400); font-size: .82rem; text-align: center; margin-top: .9rem; }

/* ---------- Alerts ---------- */
.alert { padding: 1rem 1.2rem; border-radius: var(--radius-sm); margin: 1.4rem 0 0; font-weight: 500; }
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--slate-950); color: var(--slate-400); padding: 48px 0; text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--white); font-weight: 700; font-size: 1.15rem; margin-bottom: .8rem; }
.footer-line { margin: .3rem 0; }
.footer-line a { color: var(--sky-400); }
.footer-copy { margin-top: 1rem; font-size: .85rem; color: var(--slate-500); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .steps-grid, .showcase-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .dev-grid { grid-template-columns: 1fr; gap: 1.8rem; }
    .dev-photo { max-width: 240px; }
    .contact-inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .nav-toggle { display: block; }
    nav { position: absolute; top: 68px; left: 0; right: 0; }
    .nav-links {
        display: none; flex-direction: column; align-items: stretch; gap: 0;
        background: var(--slate-900); border-bottom: 1px solid rgba(148,163,184,.15); padding: .5rem 0;
    }
    .nav-links.open { display: flex; }
    .nav-links li { padding: 0 24px; }
    .nav-links a { display: block; padding: .8rem 0; }
    .nav-cta { display: inline-block; margin: .4rem 0; text-align: center; }
    .hero { padding: 64px 0 72px; }
    .section { padding: 60px 0; }
    .steps-grid, .showcase-grid { grid-template-columns: 1fr; }
    .hero-cta .btn { width: 100%; }
}
@media (max-width: 460px) {
    .stats-grid { grid-template-columns: 1fr; }
}