/* Smartka.cz — theme styles */
:root {
    --ink: #10262e;
    --ink-soft: #46606b;
    --brand: #15803d;
    --brand-dark: #14532d;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --bg: #f7fafc;
    --card: #ffffff;
    --line: #e2e8f0;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(16, 38, 46, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.65;
    color: var(--ink);
    background: var(--bg);
}
img { max-width: 100%; height: auto; }
a { color: var(--brand); }
h1, h2, h3, h4 { line-height: 1.25; color: var(--ink); }
h1 { font-size: 2.2rem; }
h2 { font-size: 1.6rem; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.center { text-align: center; margin-top: 2rem; }

/* Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 50;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 1rem; }
.logo {
    font-size: 1.5rem; font-weight: 800; text-decoration: none; color: var(--ink);
    display: inline-flex; align-items: center; gap: 2px; letter-spacing: -.5px;
}
.logo span { color: var(--brand); }
.logo .spark { fill: var(--accent); margin-left: 2px; }
.site-nav { display: flex; align-items: center; gap: 1.2rem; }
.site-nav a { text-decoration: none; color: var(--ink-soft); font-weight: 600; font-size: .95rem; }
.site-nav a.active, .site-nav a:hover { color: var(--brand); }
.nav-toggle { display: none; font-size: 1.5rem; background: none; border: 0; cursor: pointer; color: var(--ink); }

/* Buttons */
.btn {
    display: inline-block; padding: .65rem 1.3rem; border-radius: 10px;
    font-weight: 700; text-decoration: none; border: 2px solid transparent;
    cursor: pointer; font-size: 1rem; transition: transform .1s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff !important; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-accent { background: var(--accent); color: #fff !important; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-lg { padding: .85rem 1.7rem; font-size: 1.05rem; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-nav { padding: .45rem 1rem; font-size: .9rem; }

/* Hero */
.hero { background: linear-gradient(160deg, #0f2f26 0%, #14532d 55%, #15803d 100%); color: #eafaf0; padding: 3.5rem 0 4rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.hero h1 { color: #fff; font-size: 2.5rem; margin: .4rem 0 1rem; }
.hero .lead { font-size: 1.15rem; color: #d3ecdb; }
.eyebrow { text-transform: uppercase; letter-spacing: 1.5px; font-size: .8rem; font-weight: 700; color: var(--accent); margin: 0; }
.hero-cta { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.5rem 0 1rem; }
.hero .btn-ghost { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.25); color: #fff; }
.trust { list-style: none; display: flex; gap: 1.3rem; padding: 0; margin: 1rem 0 0; flex-wrap: wrap; font-size: .92rem; color: #bfe6cc; }

/* Calculator card */
.hero-card {
    background: var(--card); color: var(--ink); border-radius: var(--radius);
    padding: 1.6rem; box-shadow: var(--shadow);
}
.hero-card h2 { margin: 0 0 1rem; font-size: 1.2rem; }
.hero-card label { font-weight: 600; font-size: .92rem; display: block; margin-bottom: .4rem; }
.range-row { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.range-row input[type=range] { flex: 1; accent-color: var(--brand); }
.range-row output { font-weight: 800; white-space: nowrap; min-width: 90px; text-align: right; }
.check-row { display: flex; align-items: center; gap: .5rem; margin-bottom: 1.1rem; font-weight: 500 !important; }
.check-row input { accent-color: var(--brand); width: 18px; height: 18px; }
.calc-result { margin-top: 1.2rem; border-top: 1px dashed var(--line); padding-top: 1.1rem; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-bottom: .8rem; }
.calc-grid small { display: block; color: var(--ink-soft); font-size: .78rem; }
.calc-grid strong { font-size: 1.15rem; color: var(--brand-dark); }
.calc-note { font-size: .8rem; color: var(--ink-soft); margin: .4rem 0 1rem; }

/* Sections */
.section { padding: 3.5rem 0; }
.section-alt { background: #eef4f0; }
.section-title { text-align: center; font-size: 1.9rem; margin: 0 0 2.2rem; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 1.5rem; text-decoration: none; color: var(--ink);
    transition: box-shadow .15s ease, transform .1s ease; display: flex; flex-direction: column;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card h3 { margin: .6rem 0 .4rem; }
.card p { color: var(--ink-soft); font-size: .95rem; flex: 1; }
.card-icon { font-size: 1.9rem; }
.card-link { color: var(--brand); font-weight: 700; font-size: .92rem; }
.post-date { color: var(--ink-soft); font-size: .82rem; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.step { text-align: center; padding: 0 1rem; }
.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: 50%; background: var(--brand);
    color: #fff; font-weight: 800; font-size: 1.15rem; margin-bottom: .6rem;
}
.step h3 { margin: .4rem 0; font-size: 1.1rem; }
.step p { color: var(--ink-soft); font-size: .95rem; }

/* Content pages */
.page-body { padding: 2.5rem 0 3.5rem; }
.page-body h1 { margin-top: 0; }
.page-body blockquote { border-left: 4px solid var(--accent); margin: 1.2rem 0; padding: .4rem 1.2rem; background: #fff; border-radius: 0 10px 10px 0; color: var(--ink-soft); }
.page-body table { border-collapse: collapse; width: 100%; background: #fff; }
.page-body th, .page-body td { border: 1px solid var(--line); padding: .55rem .8rem; text-align: left; }
.page-body th { background: #eef4f0; }

/* Article CTA */
.article-cta {
    margin-top: 2.5rem; background: linear-gradient(140deg, #14532d, #15803d);
    color: #eafaf0; border-radius: var(--radius); padding: 1.8rem; text-align: center;
}
.article-cta h3 { color: #fff; margin: 0 0 .4rem; }
.article-cta p { margin: 0 0 1.1rem; }

/* Forms */
.form-page h1 { text-align: center; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem; box-shadow: var(--shadow); }
.form-trust { text-align: center; color: var(--ink-soft); font-size: .88rem; margin-top: 1rem; }
form .form-group, form .form-field { margin-bottom: 1.1rem; }
form label { font-weight: 600; font-size: .95rem; display: block; margin-bottom: .3rem; }
form input[type=text], form input[type=email], form input[type=tel], form input[type=number], form select, form textarea {
    width: 100%; padding: .65rem .8rem; border: 1.5px solid var(--line); border-radius: 10px;
    font-size: 1rem; font-family: inherit; background: #fff; color: var(--ink);
}
form input:focus, form select:focus, form textarea:focus { outline: none; border-color: var(--brand); }
form .checkboxes label, form .checkbox label { font-weight: 400; font-size: .88rem; display: flex; gap: .5rem; align-items: flex-start; }
form .checkboxes input, form .checkbox input { width: 18px; height: 18px; accent-color: var(--brand); flex-shrink: 0; margin-top: 2px; }
form .buttons { margin-top: 1.3rem; }
form button[type=submit] {
    background: var(--accent); color: #fff; border: 0; border-radius: 10px;
    padding: .85rem 1.7rem; font-size: 1.05rem; font-weight: 700; cursor: pointer; width: 100%;
}
form button[type=submit]:hover { background: var(--accent-dark); }
form .form-errors, .form-message-error { color: #b91c1c; }
.hp-field { position: absolute !important; left: -9999px !important; opacity: 0; height: 0; overflow: hidden; }

/* Footer */
.site-footer { background: #0f2f26; color: #bfe6cc; margin-top: 0; padding: 3rem 0 1.5rem; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-bottom: 1.5rem; }
.footer-grid h4 { color: #fff; margin: 0 0 .7rem; }
.footer-grid a { display: block; color: #bfe6cc; text-decoration: none; margin-bottom: .4rem; }
.footer-grid a:hover { color: #fff; }
.logo-footer { color: #fff; margin-bottom: .5rem; }
.logo-footer span { color: #4ade80; }
.footer-note { border-top: 1px solid rgba(255,255,255,.12); padding-top: 1.2rem; font-size: .8rem; color: #8fbf9f; }

/* Responsive */
@media (max-width: 900px) {
    .hero-grid, .cards, .steps, .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.9rem; }
    h1 { font-size: 1.8rem; }
    .nav-toggle { display: block; }
    .site-nav {
        display: none; position: absolute; top: 64px; left: 0; right: 0;
        background: #fff; flex-direction: column; padding: 1.2rem 20px 1.5rem;
        border-bottom: 1px solid var(--line); align-items: flex-start;
    }
    .site-nav.open { display: flex; }
}