/* Prontuário R21 — landing stylesheet. Self-contained, no Tailwind. */

:root {
    --c-bg: #f7f7f8;
    --c-bg-alt: #ffffff;
    --c-text: #1f2937;
    --c-muted: #6b7280;
    --c-border: #e5e7eb;
    --c-primary: #2563eb;
    --c-primary-dark: #1d4ed8;
    --c-accent: #f59e0b;
    --radius: 10px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.55;
}

.container {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 24px;
}

.site-header {
    background: var(--c-bg-alt);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-sm);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    padding-bottom: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--c-text);
    font-weight: 700;
    font-size: 1.15rem;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--c-primary);
    color: #fff;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.nav a {
    color: var(--c-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}

.nav a:hover { text-decoration: underline; }

.hero {
    padding: 80px 0 56px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin: 0 0 16px;
    color: var(--c-text);
    letter-spacing: -0.5px;
}

.lede {
    font-size: 1.15rem;
    color: var(--c-muted);
    max-width: 620px;
    margin: 0 auto 32px;
}

.cta { margin: 0; }

.btn {
    display: inline-block;
    padding: 12px 22px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform .08s ease, background .15s ease;
}

.btn-primary {
    background: var(--c-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--c-primary-dark);
    transform: translateY(-1px);
}

.features {
    padding: 32px 0 64px;
}

.features h2 {
    font-size: 1.5rem;
    margin: 0 0 24px;
    color: var(--c-text);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.feature-list li {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feature-list strong {
    color: var(--c-text);
    font-size: 1.05rem;
}

.feature-list span {
    color: var(--c-muted);
    font-size: 0.95rem;
}

.site-footer {
    padding: 24px 0;
    text-align: center;
    color: var(--c-muted);
    border-top: 1px solid var(--c-border);
    background: var(--c-bg-alt);
}

@media (max-width: 540px) {
    .hero { padding: 56px 0 36px; }
    .hero h1 { font-size: 2rem; }
}