/* ===== Kremen Technologies — landing ===== */

:root {
    --bg: #050b1a;
    --bg-raised: #0a1428;
    --bg-card: #0c1830;
    --border: rgba(94, 234, 255, 0.12);
    --border-strong: rgba(94, 234, 255, 0.3);
    --text: #e6edf7;
    --text-muted: #8da2be;
    --accent: #38e0ff;
    --accent-soft: rgba(56, 224, 255, 0.12);
    --glow: 0 0 24px rgba(56, 224, 255, 0.25);
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-display: "Space Grotesk", var(--font-body);
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.15;
    letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(5, 11, 26, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 20px;
}

.logo span { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 28px; }

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    font-size: 15px;
    color: var(--text-muted);
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent); }

.lang-toggle {
    font: 600 13px/1 var(--font-body);
    letter-spacing: 0.06em;
    color: var(--accent);
    background: transparent;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    padding: 7px 14px;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
}

.lang-toggle:hover {
    background: var(--accent-soft);
    box-shadow: var(--glow);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 120px 0 140px;
    text-align: center;
}

.hero-glow {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(600px 340px at 50% -10%, rgba(56, 224, 255, 0.18), transparent 70%),
        radial-gradient(800px 500px at 80% 110%, rgba(59, 91, 219, 0.22), transparent 70%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(94, 234, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(94, 234, 255, 0.05) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 30%, transparent 75%);
    pointer-events: none;
}

.hero-inner { position: relative; }

.hero-kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    padding: 8px 18px;
    margin-bottom: 32px;
    background: var(--accent-soft);
}

.hero h1 {
    font-size: clamp(40px, 7vw, 68px);
    font-weight: 700;
    margin-bottom: 24px;
    text-shadow: 0 0 40px rgba(56, 224, 255, 0.25);
}

.hero-sub {
    max-width: 640px;
    margin: 0 auto 40px;
    color: var(--text-muted);
    font-size: 19px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
    display: inline-block;
    font-weight: 600;
    font-size: 16px;
    padding: 14px 32px;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: #04101e;
    box-shadow: 0 0 32px rgba(56, 224, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 48px rgba(56, 224, 255, 0.5);
}

.btn-ghost {
    border: 1px solid var(--border-strong);
    color: var(--text);
}

.btn-ghost:hover { background: var(--accent-soft); box-shadow: var(--glow); }

/* ===== Sections ===== */
.section { padding: 96px 0; border-top: 1px solid var(--border); }

.section-kicker {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.section h2 {
    font-size: clamp(30px, 4.5vw, 42px);
    margin-bottom: 40px;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    align-items: start;
}

.about-lead { color: var(--text-muted); font-size: 19px; }

.values { list-style: none; display: grid; gap: 28px; }

.values li { display: flex; gap: 18px; }

.value-marker {
    flex: none;
    width: 10px;
    height: 10px;
    margin-top: 9px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(56, 224, 255, 0.8);
}

.values h3 { font-size: 19px; margin-bottom: 6px; }
.values p { color: var(--text-muted); font-size: 16px; }

/* ===== Projects ===== */
.project-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 24px;
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.project-card.featured {
    border-color: var(--border-strong);
    background:
        radial-gradient(500px 260px at 0% 0%, rgba(56, 224, 255, 0.08), transparent 70%),
        var(--bg-card);
}

.project-card.featured:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow);
    border-color: var(--accent);
}

.project-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 6px 14px;
    margin-bottom: 20px;
}

.project-card h3 { font-size: 28px; margin-bottom: 14px; }

.project-card p { color: var(--text-muted); max-width: 680px; }

.project-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 24px 0;
}

.project-features li {
    font-size: 14px;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 7px 14px;
    background: var(--bg-raised);
}

.project-link {
    font-weight: 600;
    color: var(--accent);
    font-size: 16px;
}

.project-card.muted .project-tag {
    color: var(--text-muted);
    background: rgba(141, 162, 190, 0.1);
}

.projects-secondary-note {
    color: var(--text-muted);
    font-size: 15px;
    margin: 36px 0 18px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-card.small {
    padding: 28px;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.project-card.small h3 { font-size: 20px; margin-bottom: 0; }

.project-card.small p { font-size: 15px; flex: 1; }

.project-card.small .project-link { font-size: 14px; overflow-wrap: anywhere; }

.project-card.small .project-tag { margin-bottom: 4px; align-self: flex-start; }

a.project-card.small:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow);
    border-color: var(--accent);
}

/* ===== Contact ===== */
.contact-lead { color: var(--text-muted); margin: -20px 0 36px; max-width: 560px; }

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 720px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px 28px;
    transition: border-color 0.25s, box-shadow 0.25s;
}

.contact-card:hover {
    border-color: var(--accent);
    box-shadow: var(--glow);
}

.contact-label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.contact-value { font-weight: 600; color: var(--accent); overflow-wrap: anywhere; }

/* ===== Footer ===== */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 820px) {
    .about-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero { padding: 88px 0 100px; }
    .section { padding: 72px 0; }
    .project-card { padding: 28px; }
}

@media (max-width: 560px) {
    .nav-links { display: none; }
    body { font-size: 16px; }
    .hero-sub { font-size: 17px; }
}