/* ============================================
   OKOS OTTHON BUDAPEST — Global Styles
   Light, architectural aesthetic
   ============================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;1,300;1,400&family=Inter:wght@300;400;500;600&display=swap');

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

/* --- Variables --- */
:root {
  --black:       #0f0f0e;
  --dark:        #1c1b19;
  --grey-dark:   #5a5650;
  --grey-mid:    #9a9590;
  --grey-light:  #e4e0d9;
  --grey-bg:     #f5f3ef;
  --warm-bg:     #faf7f2;
  --white:       #ffffff;
  --accent:      #b8875a;

  --font-body:   'Inter', sans-serif;
  --font-serif:  'Cormorant Garamond', serif;

  --max-width:   1200px;
  --section-pad: 100px 40px;
  --radius:      4px;
  --transition:  0.25s ease;
}

/* --- Base --- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* --- Typography --- */
h1, h2 {
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: 0.01em;
}

h3, h4 {
  font-family: var(--font-body);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.8rem, 5.5vw, 5rem); }
h2 { font-size: clamp(2rem, 3.5vw, 3.4rem); }
h3 { font-size: clamp(1rem, 1.8vw, 1.2rem); }

/* Cormorant italic for accent moments */
.serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  letter-spacing: 0.01em;
}

/* Threshold seam — the signature element.
   A 1px amber line between sections, like light under a door. */
.threshold {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent 0%,
    var(--accent) 20%,
    var(--accent) 80%,
    transparent 100%
  );
  opacity: 0.35;
}

p {
  color: var(--grey-dark);
  font-size: 1rem;
  line-height: 1.75;
}

.lead {
  font-size: 1.15rem;
  color: var(--grey-dark);
  max-width: 620px;
  line-height: 1.8;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--black);
  border: 1px solid var(--black);
}

.btn-outline:hover {
  background: var(--black);
  color: var(--white);
}

/* --- Section --- */
.section {
  padding: var(--section-pad);
}

.section-bg {
  background: var(--grey-bg);
}

.section-dark {
  background: var(--dark);
  color: var(--white);
}

.section-dark p {
  color: rgba(255,255,255,0.65);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}

/* --- Divider --- */
.divider {
  width: 40px;
  height: 1px;
  background: var(--accent);
  margin: 24px 0;
}

/* --- Grid helpers --- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--grey-light);
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--black);
  letter-spacing: -0.01em;
}

.navbar-logo span {
  color: var(--accent);
}

.navbar-links {
  display: flex;
  gap: 36px;
  align-items: center;
}

.navbar-links a {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-dark);
  transition: var(--transition);
}

.navbar-links a:hover {
  color: var(--black);
}

.navbar-cta {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--black);
  padding: 10px 22px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.navbar-cta:hover {
  background: var(--accent);
}

/* --- Footer --- */
footer {
  background: var(--dark);
  color: var(--white);
  padding: 60px 40px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 280px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--white);
}

.footer-logo span {
  color: var(--accent);
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: rgba(255,255,255,0.35);
  font-size: 0.8rem;
}

/* --- Credibility bar --- */
.cred-bar {
  border-top: 1px solid var(--grey-light);
  border-bottom: 1px solid var(--grey-light);
  padding: 20px 40px;
  display: flex;
  justify-content: center;
  gap: 60px;
  align-items: center;
  background: var(--white);
}

.cred-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--grey-dark);
  text-transform: uppercase;
}

.cred-item::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* --- Stat numbers --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--grey-light);
  border: 1px solid var(--grey-light);
}

.stat-item {
  background: var(--white);
  padding: 48px 32px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--black);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey-mid);
}

/* --- Cards --- */
.card {
  background: var(--white);
  border: 1px solid var(--grey-light);
  padding: 40px;
  border-radius: var(--radius);
  transition: var(--transition);
}

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

/* Step number — only use in genuinely ordered sequences */
.step-number-inline {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-style: italic;
  color: var(--accent);
  opacity: 0.7;
  display: block;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.card h3 {
  margin-bottom: 12px;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* --- Link arrow --- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black);
  transition: var(--transition);
}

.link-arrow::after {
  content: '→';
  transition: var(--transition);
}

.link-arrow:hover {
  color: var(--accent);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* --- Image placeholder (for development) --- */
.img-placeholder {
  background: var(--grey-bg);
  border: 1px solid var(--grey-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey-mid);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* --- Form --- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grey-dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--grey-light);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--black);
  background: var(--white);
  transition: var(--transition);
  outline: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--black);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.form-note {
  font-size: 0.78rem;
  color: var(--grey-mid);
  margin-top: 12px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  :root {
    --section-pad: 72px 24px;
  }

  .container { padding: 0 24px; }
  .navbar { padding: 0 24px; }

  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .cred-bar { flex-direction: column; gap: 16px; padding: 24px; }

  .navbar-links { display: none; }
}

@media (max-width: 560px) {
  .stats-grid { grid-template-columns: 1fr; }
  .cta-section-inner { flex-direction: column; align-items: flex-start; }
}