/* ==========================================================================
   maliri-karvina.eu — Clean Scandi Cobalt Blue & Ice Sky Theme
   Palette: Royal Cobalt (#1d4ed8), Sky Ice (#f0f7ff), Deep Slate (#0f172a)
   Typography: Sora (Display) + Inter (Body)
   ========================================================================== */

:root {
  interpolate-size: allow-keywords;
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-soft: #dbeafe;
  --accent: #0284c7;
  --bg: #f8fbff;
  --bg-alt: #edf5ff;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #cfe0f5;
  --error: #dc2626;
  --error-bg: #fef2f2;
  --success: #15803d;
  --success-bg: #f0fdf4;
  --radius: 18px;
  --font-display: 'Sora', sans-serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

.container {
  width: min(1180px, 100% - 2.5rem);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.brand-dot {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.93rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.96rem;
  min-height: 48px;
  padding: 0.7rem 1.4rem;
  border-radius: 12px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 10px 24px -6px rgba(29, 78, 216, 0.35);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #ffffff;
}

.btn-outline {
  background: #ffffff;
  border-color: var(--border);
  color: var(--primary);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.hero {
  padding: 4rem 0;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.75rem;
  align-items: center;
}

.pill-tag {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 99px;
  margin-bottom: 1rem;
}

h1, h2, h3 {
  font-family: var(--font-display);
  margin-top: 0;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.3rem);
  margin-bottom: 0.9rem;
}

.section {
  padding: 4.25rem 0;
}

.section-alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 12px 30px -12px rgba(29, 78, 216, 0.08);
}

.step-num {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 1rem;
}

.calc-box {
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 2rem;
}

.calc-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  background: var(--bg-alt);
  padding: 1.1rem;
  border-radius: 12px;
  margin: 1.2rem 0;
  text-align: center;
}

.calc-results strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.2rem;
}

.gallery-item {
  border: 1px solid var(--border);
  padding: 0;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  text-align: left;
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.gallery-caption {
  display: block;
  padding: 0.7rem 0.95rem;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

details.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.35rem;
}

details.faq-item summary {
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details.faq-item summary::-webkit-details-marker {
  display: none;
}

details.faq-item summary::after {
  content: "+";
  color: var(--primary);
  font-size: 1.35rem;
  font-weight: 700;
}

details.faq-item[open] summary::after {
  content: "−";
}

details.faq-item::details-content {
  block-size: 0;
  overflow: hidden;
  transition: block-size 0.35s ease, content-visibility 0.35s allow-discrete;
}

details.faq-item[open]::details-content {
  block-size: auto;
  block-size: calc-size(auto, size);
}

.faq-body {
  padding-top: 0.8rem;
  color: var(--text-muted);
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: 0 18px 40px -15px rgba(29, 78, 216, 0.12);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.1rem;
}

.form-group {
  margin-block-end: 1.2rem;
}

.form-group label {
  display: block;
  font-weight: 700;
  font-size: 0.92rem;
  margin-block-end: 0.3rem;
}

.hint {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-block-end: 0.35rem;
}

.form-control {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  min-height: 48px;
  padding: 0.7rem 0.95rem;
  border-radius: 10px;
  border: 1.5px solid #93b4e0;
  background: #ffffff;
  color: var(--text);
}

textarea.form-control {
  min-height: 105px;
  resize: vertical;
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  min-height: 48px;
  background: var(--bg);
}

.radio-pill input[type="radio"] {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
  margin: 0;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.88rem;
}

.checkbox-row input[type="checkbox"] {
  accent-color: var(--primary);
  width: 20px;
  height: 20px;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.error-msg {
  display: none;
  color: var(--error);
  font-size: 0.84rem;
  font-weight: 600;
  margin-top: 0.3rem;
}

input.form-control:user-invalid,
textarea.form-control:user-invalid,
input.form-control.user-invalid-fallback,
textarea.form-control.user-invalid-fallback {
  border-color: var(--error);
  background-color: var(--error-bg);
}

input.form-control:user-invalid + .error-msg,
textarea.form-control:user-invalid + .error-msg,
input.form-control.user-invalid-fallback + .error-msg,
textarea.form-control.user-invalid-fallback + .error-msg {
  display: block;
}

input.form-control:user-valid,
textarea.form-control:user-valid,
input.form-control.user-valid-fallback,
textarea.form-control.user-valid-fallback {
  border-color: var(--success);
}

.form-status {
  padding: 1rem 1.2rem;
  border-radius: 10px;
  margin-bottom: 1.2rem;
}

.form-status.is-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success);
}

.form-status.is-error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error);
}

dialog#gallery-lightbox {
  border: 0;
  border-radius: var(--radius);
  padding: 1rem;
  max-width: min(900px, 92vw);
  background: var(--surface);
}

dialog#gallery-lightbox::backdrop {
  background: rgba(15, 23, 42, 0.78);
}

.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 3rem 0 2rem;
}

.site-footer a {
  color: #93c5fd;
  text-decoration: none;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.86rem;
}

@media (pointer: coarse) {
  .form-control, .btn, .radio-pill {
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after, details.faq-item::details-content {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}