/* ============================================
   crivo.tech — Style
   ============================================ */

:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a26;
    --border: rgba(255,255,255,.06);
    --border-hover: rgba(255,255,255,.12);
    --text: #e4e4e7;
    --text-muted: #71717a;
    --text-dim: #52525b;
    --accent: #61777f;
    --accent-light: #8ba3ac;
    --accent-glow: rgba(97,119,127,.15);
    --white: #fafafa;
    --font: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: .3s ease;
}

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

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 22px; border-radius: var(--radius-sm);
    font-family: var(--font); font-size: .88rem; font-weight: 600;
    border: 1px solid transparent; cursor: pointer;
    transition: all var(--transition);
}
.btn--primary {
    background: var(--accent); color: var(--white);
    border-color: var(--accent);
}
.btn--primary:hover {
    background: var(--accent-light);
    box-shadow: 0 0 24px var(--accent-glow);
}
.btn--outline {
    background: transparent; color: var(--text);
    border-color: var(--border-hover);
}
.btn--outline:hover {
    border-color: var(--accent); color: var(--white);
}
.btn--lg { padding: 14px 28px; font-size: .92rem; }

/* ── Section helpers ── */
.section-tag {
    display: inline-block;
    font-family: var(--font-mono); font-size: .75rem; font-weight: 500;
    color: var(--accent-light); text-transform: uppercase; letter-spacing: .1em;
    margin-bottom: 12px;
}
.section-title {
    font-size: 2rem; font-weight: 700; color: var(--white);
    margin-bottom: 12px; line-height: 1.2;
}
.section-subtitle {
    font-size: 1rem; color: var(--text-muted);
    max-width: 480px; margin-bottom: 48px;
}

.text-accent { color: var(--accent-light); }

[data-animate] {
    opacity: 0; transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
}
[data-animate].visible { opacity: 1; transform: none; }

/* ========================================
   HEADER
   ======================================== */
.header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(10,10,15,.8); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
.header--solid { background: rgba(10,10,15,.95); }
.header__inner {
    display: flex; align-items: center; height: 60px;
}
.header__logo { margin-right: auto; }
.header__logo-img { height: 28px; width: auto; }
.header__nav { display: none; gap: 28px; margin-right: 24px; }
.header__link {
    font-size: .85rem; color: var(--text-muted); font-weight: 500;
    transition: color var(--transition);
}
.header__link:hover { color: var(--white); }
.header__cta { display: none; }

.hamburger {
    display: flex; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 8px; margin-left: 16px;
}
.hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.header__nav.open {
    display: flex; flex-direction: column; gap: 0;
    position: fixed; top: 60px; left: 0; width: 100%;
    background: rgba(10,10,15,.98); border-bottom: 1px solid var(--border);
    padding: 8px 0; z-index: 999;
}
.header__nav.open .header__link {
    padding: 14px 24px; display: block; text-align: center; font-size: 1rem;
}

/* ========================================
   HERO
   ======================================== */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding: 100px 0 60px; position: relative; overflow: hidden;
}
.hero__bg-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(97,119,127,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(97,119,127,.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, black 20%, transparent 100%);
}
.hero__inner {
    position: relative; z-index: 1; text-align: center;
    display: flex; flex-direction: column; align-items: center;
}
.hero__badge {
    font-family: var(--font-mono); font-size: .72rem; font-weight: 500;
    color: var(--accent-light); text-transform: uppercase; letter-spacing: .12em;
    padding: 6px 16px; border: 1px solid var(--border-hover);
    border-radius: 100px; margin-bottom: 28px;
    background: var(--accent-glow);
}
.hero__title {
    font-size: 2.6rem; font-weight: 700; line-height: 1.15;
    color: var(--white); max-width: 720px; margin-bottom: 20px;
}
.hero__subtitle {
    font-size: 1.05rem; color: var(--text-muted);
    max-width: 540px; margin-bottom: 36px; line-height: 1.7;
}
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 56px; }

.hero__metrics {
    display: flex; align-items: center; gap: 24px;
    padding: 20px 32px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg-card);
}
.hero__metric { text-align: center; }
.hero__metric-value {
    display: block; font-size: 1.5rem; font-weight: 700;
    color: var(--white); font-family: var(--font-mono);
}
.hero__metric-label { font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.hero__metric-divider { width: 1px; height: 36px; background: var(--border); }

/* ========================================
   SERVICES
   ======================================== */
.services { padding: 100px 0; }
.services__grid {
    display: grid; grid-template-columns: 1fr; gap: 16px;
}
.service-card {
    padding: 28px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg-card);
    transition: all var(--transition);
}
.service-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}
.service-card__icon {
    color: var(--accent-light); margin-bottom: 16px;
}
.service-card__title {
    font-size: 1.05rem; font-weight: 600; color: var(--white);
    margin-bottom: 8px;
}
.service-card__desc { font-size: .88rem; color: var(--text-muted); line-height: 1.6; }

/* ========================================
   CASES
   ======================================== */
.cases { padding: 100px 0; }
.cases__grid { display: grid; grid-template-columns: 1fr; gap: 20px; }

.case-card {
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--bg-card); overflow: hidden;
    transition: all var(--transition);
}
.case-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.case-card__img {
    position: relative; aspect-ratio: 16/9;
    background: linear-gradient(135deg, #15151f 0%, #1a1a2e 100%);
    overflow: hidden;
}
.case-card__img--sm { aspect-ratio: 16/8; }

.case-card__placeholder {
    display: flex; align-items: center; justify-content: center;
    width: 100%; height: 100%;
    color: var(--text-dim); font-size: .82rem;
    border-bottom: 1px dashed var(--border);
}
.case-card__placeholder span {
    padding: 8px 16px; border: 1px dashed var(--border-hover);
    border-radius: var(--radius-sm); font-family: var(--font-mono);
    font-size: .72rem;
}

.case-card__img img {
    width: 100%; height: 100%; object-fit: cover;
}

.case-card__tags {
    position: absolute; top: 12px; left: 12px;
    display: flex; gap: 6px;
}
.case-tag {
    font-family: var(--font-mono); font-size: .65rem; font-weight: 500;
    padding: 4px 10px; border-radius: 100px;
    background: rgba(10,10,15,.7); backdrop-filter: blur(8px);
    border: 1px solid var(--border); color: var(--accent-light);
    text-transform: uppercase; letter-spacing: .05em;
}
.case-tag--sm { font-size: .62rem; padding: 3px 8px; }

.case-card__content { padding: 24px; }
.case-card__title {
    font-size: 1.1rem; font-weight: 600; color: var(--white);
    margin-bottom: 8px;
}
.case-card__desc {
    font-size: .85rem; color: var(--text-muted); line-height: 1.6;
    margin-bottom: 16px;
}
.case-card__desc strong { color: var(--accent-light); font-weight: 600; }

.case-card__metrics {
    display: flex; gap: 20px; margin-bottom: 16px;
    padding: 12px 0; border-top: 1px solid var(--border);
}
.case-metric { text-align: center; flex: 1; }
.case-metric__value {
    display: block; font-size: 1rem; font-weight: 700;
    color: var(--white); font-family: var(--font-mono);
}
.case-metric__label { font-size: .65rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; }

.case-card__tags-inline { display: flex; gap: 6px; margin-top: 12px; }

.case-card__link {
    font-size: .82rem; font-weight: 600; color: var(--accent-light);
    transition: color var(--transition);
}
.case-card__link:hover { color: var(--white); }

/* ========================================
   SOLUTIONS
   ======================================== */
.stack { padding: 100px 0; }
.solutions__grid {
    display: grid; grid-template-columns: 1fr; gap: 16px;
}
.solution-card {
    padding: 28px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg-card);
    transition: all var(--transition);
    display: flex; gap: 20px; align-items: flex-start;
}
.solution-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}
.solution-card__icon {
    color: var(--accent-light); flex-shrink: 0;
    margin-top: 2px;
}
.solution-card__title {
    font-size: 1rem; font-weight: 600; color: var(--white);
    margin-bottom: 6px;
}
.solution-card__desc {
    font-size: .85rem; color: var(--text-muted); line-height: 1.6;
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent 0%, var(--accent-glow) 100%);
}
.contact__inner { text-align: center; }
.contact__text { max-width: 560px; margin: 0 auto; }
.contact__text .section-subtitle { margin: 0 auto 32px; }
.contact__channels {
    display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}
.footer__inner {
    display: flex; flex-direction: column; align-items: center;
    gap: 20px; text-align: center;
}
.footer__logo { height: 24px; width: auto; opacity: .5; }
.footer__links { display: flex; gap: 20px; }
.footer__links a {
    font-size: .82rem; color: var(--text-muted);
    transition: color var(--transition);
}
.footer__links a:hover { color: var(--white); }
.footer__copy { font-size: .72rem; color: var(--text-dim); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (min-width: 640px) {
    .services__grid { grid-template-columns: repeat(2, 1fr); }
    .solutions__grid { grid-template-columns: repeat(2, 1fr); }
    .cases__grid { grid-template-columns: repeat(2, 1fr); }
    .case-card--featured { grid-column: span 2; }
    .case-card--featured .case-card__content { padding: 28px; }
}

@media (min-width: 1024px) {
    .header__nav { display: flex; }
    .header__cta { display: inline-flex; }
    .hamburger { display: none; }

    .hero__title { font-size: 3.6rem; }
    .hero__subtitle { font-size: 1.1rem; }

    .section-title { font-size: 2.4rem; }

    .services__grid { grid-template-columns: repeat(3, 1fr); }
    .solutions__grid { grid-template-columns: repeat(3, 1fr); }

    .cases__grid { grid-template-columns: repeat(3, 1fr); }
    .case-card--featured { grid-column: span 3; display: grid; grid-template-columns: 1fr 1fr; }
    .case-card--featured .case-card__img { aspect-ratio: auto; }
    .case-card--featured .case-card__content {
        display: flex; flex-direction: column; justify-content: center; padding: 36px;
    }

    .footer__inner { flex-direction: row; justify-content: space-between; }
}