/* ---------------------------------------------------------
   Tomislav Savretić — Izumi / Inventions
   --------------------------------------------------------- */

:root {
  --ink: #1c2333;
  --ink-soft: #4a5268;
  --paper: #f7f5f0;
  --paper-card: #ffffff;
  --line: #e2ddd2;
  --accent: #9a6b2f;
  --accent-dark: #7c5423;
  --navy: #223252;
  --serif: "Georgia", "Times New Roman", serif;
  --sans: "Helvetica Neue", "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  font-size: 17px;
}

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ------------------------------ header ------------------ */

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.brand {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.header-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

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

.lang-switch {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 5px 12px !important;
  font-weight: 600;
  color: var(--navy) !important;
  background: var(--paper-card);
}

.lang-switch:hover { border-color: var(--accent); }

/* ------------------------------ hero -------------------- */

.hero {
  background: var(--navy);
  color: #f0ede6;
  padding: 84px 0 76px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.hero-kicker {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: #c9a468;
  margin-bottom: 18px;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.3rem);
  line-height: 1.12;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.08rem;
  color: #c6cddd;
  max-width: 46ch;
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dark); }

.btn-ghost {
  border: 1px solid rgba(240, 237, 230, 0.4);
  color: #f0ede6;
}
.btn-ghost:hover { border-color: #c9a468; color: #c9a468; }

.hero-figure {
  background: #fdfcf9;
  border-radius: 6px;
  padding: 14px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
  transform: rotate(1.2deg);
}

.hero-figure img {
  display: block;
  width: 100%;
  border-radius: 2px;
}

.hero-figure figcaption {
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-align: center;
  padding: 10px 4px 2px;
  font-style: italic;
}

/* ------------------------------ sections ---------------- */

.section { padding: 78px 0; }

.section-alt {
  background: #efece4;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading { margin-bottom: 44px; max-width: 62ch; }

.section-heading .kicker {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.26em;
  color: var(--accent-dark);
  margin-bottom: 10px;
}

.section-heading h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 14px;
}

.section-heading p { color: var(--ink-soft); }

/* ------------------------------ patent cards ------------ */

.patent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.patent-card {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  border-radius: 6px;
  padding: 26px 24px;
}

.patent-number {
  display: inline-block;
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--accent-dark);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 3px 10px;
  margin-bottom: 16px;
  background: var(--paper);
}

.patent-card h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.35;
  margin-bottom: 10px;
}

.patent-card p { font-size: 0.94rem; color: var(--ink-soft); }

/* ------------------------------ motor feature ----------- */

.feature {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 52px;
  align-items: center;
}

.feature-figure {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  box-shadow: 0 10px 30px rgba(28, 35, 51, 0.08);
}

.feature-figure img { display: block; width: 100%; }

.feature-figure figcaption {
  font-size: 0.78rem;
  color: var(--ink-soft);
  font-style: italic;
  text-align: center;
  padding: 10px 4px 2px;
}

.feature h3 {
  font-family: var(--serif);
  font-size: 1.5rem;
  line-height: 1.3;
  margin-bottom: 16px;
}

.feature p { color: var(--ink-soft); margin-bottom: 14px; }

/* ------------------------------ secret inventions ------- */

.invention-list {
  display: grid;
  gap: 22px;
}

.invention {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 30px 32px;
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 24px;
  align-items: start;
}

.invention-index {
  font-family: var(--serif);
  font-size: 1.9rem;
  color: var(--line);
  font-weight: 700;
  line-height: 1;
  padding-top: 4px;
}

.invention h3 {
  font-family: var(--serif);
  font-size: 1.22rem;
  margin-bottom: 10px;
}

.invention p { color: var(--ink-soft); font-size: 0.96rem; }

.invention ul {
  margin: 10px 0 0 18px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.invention li { margin-bottom: 4px; }

.price {
  text-align: right;
  min-width: 150px;
}

.price .price-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.price .price-value {
  font-family: var(--serif);
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--accent-dark);
  white-space: nowrap;
}

.note {
  margin-top: 30px;
  border-left: 3px solid var(--accent);
  background: var(--paper-card);
  border-radius: 0 6px 6px 0;
  padding: 18px 24px;
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-style: italic;
}

/* ------------------------------ documents --------------- */

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.doc-card {
  display: block;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  text-decoration: none;
  color: var(--ink);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.doc-card:hover {
  box-shadow: 0 12px 30px rgba(28, 35, 51, 0.14);
  transform: translateY(-3px);
}

.doc-card img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
}

.doc-card span {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding: 12px 4px 4px;
}

/* ------------------------------ contact / footer -------- */

.contact {
  background: var(--navy);
  color: #f0ede6;
  padding: 72px 0;
}

.contact h2 {
  font-family: var(--serif);
  font-size: 2rem;
  margin-bottom: 8px;
}

.contact .contact-lead { color: #c6cddd; margin-bottom: 38px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 30px;
}

.contact-item .label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #c9a468;
  margin-bottom: 8px;
}

.contact-item p, .contact-item a {
  color: #f0ede6;
  text-decoration: none;
  font-size: 1rem;
}

.contact-item a:hover { color: #c9a468; }

.site-footer {
  background: #1a2740;
  color: #8d97ad;
  font-size: 0.82rem;
  padding: 22px 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer a { color: #c9a468; text-decoration: none; }

/* ------------------------------ responsive -------------- */

@media (max-width: 860px) {
  .hero .container, .feature { grid-template-columns: 1fr; }
  .hero-figure { max-width: 420px; margin: 0 auto; }
  .invention { grid-template-columns: 1fr; gap: 12px; }
  .invention-index { display: none; }
  .price { text-align: left; }
  .header-nav a:not(.lang-switch) { display: none; }
}