/*
Theme Name: I Dream of AI
Theme URI: https://idreamof.ai
Author: PAD International Research Group
Author URI: https://idreamof.ai
Description: Design system theme for the I Dream of AI citizen science project. Provides styles, fonts, header, footer, and navigation. Create your own pages using the CSS classes documented in README.
Version: 5.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: idreamofai
Requires at least: 6.0
Requires PHP: 7.4
*/

/* ===== RESET & BASE ===== */
:root {
  --idai-ink: #0a0a12;
  --idai-paper: #f6f4f0;
  --idai-paper-warm: #ece8e1;
  --idai-accent: #2c4a7c;
  --idai-accent-light: #4a6fa5;
  --idai-accent-glow: #7ba0d4;
  --idai-muted: #8a8578;
  --idai-border: #d4d0c8;
  --idai-dream-blue: #1a2744;
  --idai-dream-purple: #2a1f3d;
  --idai-serif: 'Cormorant Garamond', Georgia, serif;
  --idai-sans: 'DM Sans', system-ui, sans-serif;
  --idai-transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  font-family: var(--idai-sans);
  background: var(--idai-paper);
  color: var(--idai-ink);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ===== SITE HEADER ===== */
.idai-header {
  padding: 20px 48px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--idai-border);
  background: var(--idai-paper);
  position: sticky; top: 0; z-index: 100;
}
.idai-logo {
  font-family: var(--idai-serif);
  font-size: 22px; font-weight: 300;
  letter-spacing: 0.04em; color: var(--idai-ink);
}
.idai-logo em { font-style: italic; font-weight: 500; }
.idai-logo a { color: inherit; }

.idai-nav { display: flex; gap: 32px; align-items: center; }
.idai-nav a {
  font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--idai-muted); transition: color var(--idai-transition);
  font-weight: 500;
}
.idai-nav a:hover,
.idai-nav a.current { color: var(--idai-ink); }
.idai-nav .idai-nav-cta {
  background: var(--idai-accent); color: #fff !important;
  padding: 8px 20px; border-radius: 2px; font-size: 12px;
}
.idai-nav .idai-nav-cta:hover { background: var(--idai-accent-light); }

.idai-lang-switch {
  font-size: 12px; color: var(--idai-muted);
  border-left: 1px solid var(--idai-border);
  padding-left: 24px; margin-left: 8px;
  letter-spacing: 0.04em;
}
.idai-lang-switch strong { color: var(--idai-ink); }

/* Mobile menu toggle */
.idai-menu-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 32px; height: 32px; position: relative;
}
.idai-menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--idai-ink); position: absolute; left: 4px;
  transition: all 0.3s;
}
.idai-menu-toggle span:nth-child(1) { top: 8px; }
.idai-menu-toggle span:nth-child(2) { top: 15px; }
.idai-menu-toggle span:nth-child(3) { top: 22px; }

/* ===== HERO (Homepage) ===== */
.idai-hero {
  min-height: 90vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center;
  padding: 100px 48px 80px;
  background: linear-gradient(175deg, var(--idai-dream-blue) 0%, #0f1a2e 40%, var(--idai-dream-purple) 100%);
  position: relative; overflow: hidden;
}
.idai-hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(74,111,165,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 30%, rgba(120,90,160,0.1) 0%, transparent 50%);
  pointer-events: none;
}
.idai-hero::after {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
}
.idai-hero-inner { position: relative; z-index: 1; max-width: 800px; }
.idai-hero-overline {
  font-family: var(--idai-sans); font-size: 11px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--idai-accent-glow); margin-bottom: 32px;
  opacity: 0; animation: idaiFadeUp 0.8s 0.2s forwards;
}
.idai-hero h1 {
  font-family: var(--idai-serif); font-size: clamp(38px, 6vw, 72px);
  font-weight: 300; color: #fff; line-height: 1.15; margin-bottom: 28px;
  opacity: 0; animation: idaiFadeUp 0.8s 0.4s forwards;
}
.idai-hero h1 em { font-style: italic; font-weight: 400; color: var(--idai-accent-glow); }
.idai-hero-sub {
  font-size: 18px; color: rgba(255,255,255,0.6); line-height: 1.7;
  max-width: 560px; margin: 0 auto 48px;
  opacity: 0; animation: idaiFadeUp 0.8s 0.6s forwards;
}
.idai-hero-cta {
  display: inline-block; background: #fff; color: var(--idai-dream-blue);
  padding: 16px 40px; font-family: var(--idai-sans); font-size: 14px;
  font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  border-radius: 2px; transition: all var(--idai-transition);
  opacity: 0; animation: idaiFadeUp 0.8s 0.8s forwards;
}
.idai-hero-cta:hover {
  background: var(--idai-accent-glow); color: #fff;
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.idai-hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.3); font-size: 12px;
  letter-spacing: 0.15em; text-transform: uppercase; z-index: 1;
  animation: idaiPulse 2s infinite;
}

@keyframes idaiFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes idaiPulse {
  0%, 100% { opacity: 0.3; } 50% { opacity: 0.7; }
}

/* ===== PAGE HEROES (inner pages) ===== */
.idai-page-hero {
  background: linear-gradient(175deg, var(--idai-dream-blue) 0%, #111827 100%);
  padding: 80px 48px 60px; text-align: center; color: #fff;
}
.idai-page-hero h1 {
  font-family: var(--idai-serif); font-size: 48px; font-weight: 300;
  margin-bottom: 16px;
}
.idai-page-hero h1 em { font-style: italic; color: var(--idai-accent-glow); }
.idai-page-hero p {
  font-size: 17px; color: rgba(255,255,255,0.6);
  max-width: 560px; margin: 0 auto; line-height: 1.7;
}

/* ===== CONTENT SECTIONS ===== */
.idai-section {
  padding: 100px 48px; max-width: 1200px; margin: 0 auto;
}
.idai-section.with-border { border-top: 1px solid var(--idai-border); }
.idai-section-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--idai-accent); margin-bottom: 24px;
}
.idai-section h2 {
  font-family: var(--idai-serif); font-size: 38px; font-weight: 400;
  line-height: 1.25; margin-bottom: 24px; max-width: 600px;
}
.idai-section-text {
  font-size: 17px; color: #555; line-height: 1.8; max-width: 640px;
  margin-bottom: 16px;
}
.idai-section-text:last-child { margin-bottom: 0; }
.idai-section-text em { font-style: italic; }

/* ===== STEPS (How It Works) ===== */
.idai-steps {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 48px; margin-top: 56px;
}
.idai-step { position: relative; padding-top: 48px; }
.idai-step-num {
  font-family: var(--idai-serif); font-size: 64px; font-weight: 300;
  color: var(--idai-accent-glow); opacity: 0.4; line-height: 1;
  position: absolute; top: 0; left: 0;
}
.idai-step h3 {
  font-family: var(--idai-serif); font-size: 24px; font-weight: 500;
  margin: 8px 0 12px;
}
.idai-step p { font-size: 15px; color: #666; line-height: 1.7; }

/* ===== STATS BAR ===== */
.idai-stats {
  background: var(--idai-ink); color: #fff; padding: 56px 48px;
  display: flex; justify-content: center; gap: 80px;
}
.idai-stat { text-align: center; }
.idai-stat-num {
  font-family: var(--idai-serif); font-size: 48px; font-weight: 300;
  color: var(--idai-accent-glow); line-height: 1.2;
}
.idai-stat-label {
  font-size: 12px; font-weight: 500; letter-spacing: 0.15em;
  text-transform: uppercase; color: rgba(255,255,255,0.5); margin-top: 8px;
}

/* ===== CREDENTIALS ===== */
.idai-credentials {
  display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
  padding: 48px 0; margin-top: 48px; border-top: 1px solid var(--idai-border);
}
.idai-credential {
  font-size: 13px; color: var(--idai-muted); line-height: 1.5;
  padding-left: 20px; border-left: 2px solid var(--idai-accent-glow);
}
.idai-credential strong { color: var(--idai-ink); display: block; font-weight: 600; }

/* ===== BOTTOM CTA ===== */
.idai-bottom-cta {
  text-align: center; padding: 80px 48px 100px; background: var(--idai-paper);
}
.idai-bottom-cta p {
  font-family: var(--idai-serif); font-size: 32px; font-weight: 300;
  color: var(--idai-ink); margin-bottom: 32px; line-height: 1.3;
}
.idai-bottom-cta a {
  display: inline-block; background: var(--idai-accent); color: #fff;
  padding: 16px 40px; font-family: var(--idai-sans); font-size: 14px;
  font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  border-radius: 2px; transition: all var(--idai-transition);
}
.idai-bottom-cta a:hover {
  background: var(--idai-accent-light); transform: translateY(-2px);
}

/* ===== FORM PAGE ===== */
.idai-form-container {
  max-width: 720px; margin: -40px auto 80px;
  padding: 0 24px; position: relative; z-index: 2;
}
.idai-form-card {
  background: #fff; border-radius: 4px; padding: 56px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
}
.idai-form-stage-label {
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--idai-accent); font-weight: 600; margin-bottom: 8px;
}
.idai-form-stage-title {
  font-family: var(--idai-serif); font-size: 28px; font-weight: 400;
  margin-bottom: 8px;
}
.idai-form-stage-desc {
  font-size: 15px; color: var(--idai-muted); margin-bottom: 28px; line-height: 1.6;
}
.idai-dream-textarea {
  width: 100%; min-height: 200px; border: 1px solid var(--idai-border);
  border-radius: 3px; padding: 20px; font-family: var(--idai-serif);
  font-size: 18px; line-height: 1.8; resize: vertical;
  color: var(--idai-ink); background: var(--idai-paper);
  transition: border-color 0.3s;
}
.idai-dream-textarea::placeholder { color: #bbb; font-style: italic; }
.idai-dream-textarea:focus { outline: none; border-color: var(--idai-accent); }
.idai-form-divider {
  margin: 48px 0; border: none; border-top: 1px solid var(--idai-border);
}
.idai-optional-badge {
  display: inline-block; font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--idai-muted); background: var(--idai-paper);
  padding: 3px 10px; border-radius: 2px; margin-left: 8px; vertical-align: middle;
}
.idai-form-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px;
}
.idai-form-group { display: flex; flex-direction: column; }
.idai-form-group.full { grid-column: 1 / -1; }
.idai-form-label {
  font-size: 13px; font-weight: 500; margin-bottom: 6px; color: #444;
}
.idai-form-select,
.idai-form-input {
  padding: 10px 14px; border: 1px solid var(--idai-border); border-radius: 3px;
  font-family: var(--idai-sans); font-size: 14px; color: var(--idai-ink);
  background: #fff; transition: border-color 0.3s;
}
.idai-form-select:focus,
.idai-form-input:focus { outline: none; border-color: var(--idai-accent); }
.idai-checkbox-group {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px;
}
.idai-checkbox-pill {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px; border: 1px solid var(--idai-border); border-radius: 20px;
  font-size: 13px; color: #555; cursor: pointer; transition: all 0.2s;
}
.idai-checkbox-pill:hover { border-color: var(--idai-accent); color: var(--idai-accent); }
.idai-checkbox-pill input[type="checkbox"] { display: none; }
.idai-checkbox-pill.checked {
  border-color: var(--idai-accent); color: var(--idai-accent);
  background: rgba(44,74,124,0.06);
}
.idai-consent-row {
  margin-top: 32px; padding: 20px; background: var(--idai-paper); border-radius: 3px;
  display: flex; gap: 12px; align-items: flex-start;
}
.idai-consent-row input[type="checkbox"] {
  margin-top: 3px; width: 18px; height: 18px; accent-color: var(--idai-accent);
  flex-shrink: 0;
}
.idai-consent-row label { font-size: 14px; color: #555; line-height: 1.5; }
.idai-consent-row a { color: var(--idai-accent); }
.idai-submit-btn {
  display: block; width: 100%; margin-top: 32px; padding: 16px;
  background: var(--idai-accent); color: #fff; border: none; border-radius: 3px;
  font-family: var(--idai-sans); font-size: 15px; font-weight: 600;
  letter-spacing: 0.04em; cursor: pointer; transition: all var(--idai-transition);
}
.idai-submit-btn:hover {
  background: var(--idai-accent-light); transform: translateY(-1px);
}

/* ===== PROJECT PAGE ===== */
.idai-project-hero {
  padding: 80px 48px 0; max-width: 900px; margin: 0 auto;
}
.idai-project-hero h1 {
  font-family: var(--idai-serif); font-size: 52px; font-weight: 300;
  line-height: 1.2; margin-bottom: 24px;
}
.idai-project-hero h1 em { font-style: italic; }
.idai-project-hero .lead {
  font-size: 19px; color: #555; line-height: 1.8; max-width: 680px;
}
.idai-project-content { max-width: 900px; margin: 0 auto; padding: 0 48px 80px; }
.idai-project-section { padding: 56px 0; border-top: 1px solid var(--idai-border); }
.idai-project-section:first-of-type { border-top: none; }
.idai-project-section h2 {
  font-family: var(--idai-serif); font-size: 32px; font-weight: 400;
  margin-bottom: 20px;
}
.idai-project-section p {
  font-size: 17px; color: #555; line-height: 1.8; margin-bottom: 16px;
}
.idai-project-section p:last-child { margin-bottom: 0; }

.idai-method-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px;
}
.idai-method-card {
  padding: 28px; border: 1px solid var(--idai-border); border-radius: 3px; background: #fff;
}
.idai-method-card h4 {
  font-family: var(--idai-serif); font-size: 20px; font-weight: 500;
  margin-bottom: 12px; color: var(--idai-accent);
}
.idai-method-card p { font-size: 14px; color: #666; line-height: 1.6; margin: 0; }

.idai-download-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 24px;
  padding: 12px 24px; border: 1px solid var(--idai-accent); border-radius: 2px;
  color: var(--idai-accent); font-size: 14px; font-weight: 500;
  transition: all var(--idai-transition);
}
.idai-download-link:hover { background: var(--idai-accent); color: #fff; }

.idai-team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 32px;
}
.idai-team-member { text-align: center; }
.idai-team-avatar {
  width: 96px; height: 96px; border-radius: 50%; background: var(--idai-paper-warm);
  margin: 0 auto 16px; display: flex; align-items: center; justify-content: center;
  font-family: var(--idai-serif); font-size: 32px; color: var(--idai-accent);
  font-weight: 300; border: 1px solid var(--idai-border); overflow: hidden;
}
.idai-team-avatar img { width: 100%; height: 100%; object-fit: cover; }
.idai-team-name { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.idai-team-role { font-size: 13px; color: var(--idai-muted); line-height: 1.4; }

/* ===== ATLAS PAGE ===== */
.idai-atlas-hero {
  min-height: 70vh; display: flex; flex-direction: column;
  justify-content: center; align-items: center; text-align: center;
  padding: 80px 48px; background: var(--idai-ink);
  position: relative; overflow: hidden;
}
.idai-atlas-hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 40%, rgba(74,111,165,0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(120,90,160,0.08) 0%, transparent 40%),
    radial-gradient(circle at 50% 20%, rgba(123,160,212,0.06) 0%, transparent 50%);
}
.idai-atlas-dot {
  position: absolute; border-radius: 50%; background: var(--idai-accent-glow);
  animation: idaiTwinkle 3s infinite alternate;
}
@keyframes idaiTwinkle { 0% { opacity: 0.2; } 100% { opacity: 0.8; } }
.idai-atlas-content { position: relative; z-index: 1; max-width: 680px; }
.idai-atlas-hero h1 {
  font-family: var(--idai-serif); font-size: 52px; font-weight: 300;
  color: #fff; margin-bottom: 24px; line-height: 1.2;
}
.idai-atlas-hero h1 em { font-style: italic; color: var(--idai-accent-glow); }
.idai-atlas-hero p {
  font-size: 18px; color: rgba(255,255,255,0.55); line-height: 1.7; margin-bottom: 40px;
}
.idai-atlas-status {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 28px; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 3px; color: rgba(255,255,255,0.7);
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
}
.idai-pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--idai-accent-glow); animation: idaiStatusPulse 2s infinite;
}
@keyframes idaiStatusPulse {
  0%,100% { opacity: 0.4; box-shadow: 0 0 0 0 rgba(123,160,212,0.4); }
  50% { opacity: 1; box-shadow: 0 0 0 6px rgba(123,160,212,0); }
}
.idai-atlas-preview {
  max-width: 1000px; margin: -60px auto 0; padding: 0 48px;
  position: relative; z-index: 2;
}
.idai-atlas-placeholder {
  background: #fff; border-radius: 4px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.1);
  padding: 48px; text-align: center; min-height: 400px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.idai-atlas-placeholder svg { margin-bottom: 32px; opacity: 0.6; }
.idai-atlas-placeholder h3 {
  font-family: var(--idai-serif); font-size: 24px; font-weight: 400; margin-bottom: 12px;
}
.idai-atlas-placeholder p {
  font-size: 15px; color: var(--idai-muted); max-width: 440px; line-height: 1.6;
}
/* Container for future D3.js/Observable visualization */
.idai-atlas-viz-container {
  max-width: 1200px; margin: 0 auto; padding: 0 48px;
  min-height: 600px; display: none; /* Show when viz is ready */
}
.idai-atlas-features {
  max-width: 900px; margin: 80px auto; padding: 0 48px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px;
}
.idai-atlas-feature h4 {
  font-family: var(--idai-serif); font-size: 22px; font-weight: 500; margin-bottom: 10px;
}
.idai-atlas-feature p { font-size: 14px; color: #666; line-height: 1.6; }

/* ===== FAQ ===== */
.idai-faq-container { max-width: 760px; margin: 0 auto; padding: 60px 48px 100px; }
.idai-faq-group-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--idai-accent);
  margin: 48px 0 20px; padding-top: 32px;
  border-top: 1px solid var(--idai-border);
}
.idai-faq-group-label:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.idai-faq-item {
  border-bottom: 1px solid var(--idai-border);
}
.idai-faq-question {
  width: 100%; padding: 20px 0; background: none; border: none;
  font-family: var(--idai-sans); font-size: 17px; font-weight: 600;
  color: var(--idai-ink); text-align: left; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  transition: color 0.2s;
}
.idai-faq-question:hover { color: var(--idai-accent); }
.idai-faq-question::after {
  content: '+'; font-size: 24px; font-weight: 300; color: var(--idai-muted);
  transition: transform 0.3s;
}
.idai-faq-item.open .idai-faq-question::after {
  content: '\2212'; transform: rotate(0deg);
}
.idai-faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease;
}
.idai-faq-item.open .idai-faq-answer { max-height: 400px; }
.idai-faq-answer p {
  font-size: 15px; color: #555; line-height: 1.7; padding: 0 0 20px;
}

/* ===== LONG-FORM TEXT PAGES (Privacy, Ethics, Press) ===== */
.idai-text-page { max-width: 760px; margin: 0 auto; padding: 60px 48px 100px; }
.idai-text-page h2 {
  font-family: var(--idai-serif); font-size: 28px; font-weight: 500;
  margin: 48px 0 16px; color: var(--idai-ink);
}
.idai-text-page h2:first-child { margin-top: 0; }
.idai-text-page p {
  font-size: 16px; color: #555; line-height: 1.8; margin-bottom: 16px;
}
.idai-text-page p:last-child { margin-bottom: 0; }
.idai-text-page ul {
  margin: 8px 0 16px 24px; list-style: disc;
}
.idai-text-page ul li {
  font-size: 16px; color: #555; line-height: 1.8; margin-bottom: 6px;
}
.idai-text-page strong { color: var(--idai-ink); }
.idai-text-page a { color: var(--idai-accent); border-bottom: 1px solid transparent; }
.idai-text-page a:hover { border-bottom-color: var(--idai-accent); }
.idai-text-page .idai-updated {
  font-size: 13px; color: var(--idai-muted); margin-bottom: 32px;
}

/* ===== CONTACT ===== */
.idai-contact-grid {
  max-width: 900px; margin: 0 auto; padding: 60px 48px 40px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px;
}
.idai-contact-block h3 {
  font-family: var(--idai-serif); font-size: 22px; font-weight: 500;
  margin-bottom: 8px;
}
.idai-contact-block p { font-size: 15px; color: #555; line-height: 1.6; margin-bottom: 12px; }
.idai-contact-block a {
  color: var(--idai-accent); font-weight: 500; font-size: 15px;
}
.idai-contact-block a:hover { border-bottom: 1px solid var(--idai-accent); }
.idai-contact-address {
  max-width: 900px; margin: 0 auto; padding: 40px 48px 100px;
  border-top: 1px solid var(--idai-border);
}
.idai-contact-address h3 {
  font-family: var(--idai-serif); font-size: 22px; font-weight: 500; margin-bottom: 12px;
}
.idai-contact-address p { font-size: 15px; color: #555; line-height: 1.7; }

/* ===== PRESS KIT ===== */
.idai-press-facts {
  max-width: 760px; margin: 0 auto; padding: 0 48px;
  display: grid; grid-template-columns: 160px 1fr; gap: 8px 24px;
  margin-top: 24px;
}
.idai-press-fact-label {
  font-size: 13px; font-weight: 600; color: var(--idai-ink);
  padding: 6px 0;
}
.idai-press-fact-value {
  font-size: 14px; color: #555; padding: 6px 0;
  border-bottom: 1px solid var(--idai-border);
}
.idai-press-assets {
  max-width: 760px; margin: 32px auto 0; padding: 0 48px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.idai-press-asset {
  padding: 20px; border: 1px solid var(--idai-border); border-radius: 3px;
  display: flex; align-items: center; gap: 12px;
  font-size: 14px; font-weight: 500; color: var(--idai-accent);
  transition: all 0.2s;
}
.idai-press-asset:hover {
  border-color: var(--idai-accent); background: rgba(44,74,124,0.04);
}
.idai-press-angles {
  max-width: 760px; margin: 0 auto; padding: 0 48px;
}
.idai-press-angle {
  font-size: 16px; color: #555; line-height: 1.7;
  padding: 16px 0; border-bottom: 1px solid var(--idai-border);
  padding-left: 20px; position: relative;
}
.idai-press-angle::before {
  content: '\2014'; position: absolute; left: 0; color: var(--idai-accent);
}

/* ===== FOOTER ===== */
.idai-footer {
  background: var(--idai-ink); color: rgba(255,255,255,0.6);
  padding: 64px 48px 40px;
}
.idai-footer-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
}
.idai-footer-brand {
  font-family: var(--idai-serif); font-size: 20px; color: #fff;
  font-weight: 300; margin-bottom: 16px;
}
.idai-footer-brand em { font-weight: 500; font-style: italic; }
.idai-footer-desc { font-size: 14px; line-height: 1.6; max-width: 280px; }
.idai-footer-col h5 {
  font-size: 11px; font-weight: 600; letter-spacing: 0.15em;
  text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 16px;
}
.idai-footer-col a {
  display: block; font-size: 14px; color: rgba(255,255,255,0.6);
  margin-bottom: 8px; transition: color 0.2s;
}
.idai-footer-col a:hover { color: #fff; }
.idai-footer-bottom {
  max-width: 1200px; margin: 48px auto 0; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between;
  font-size: 12px; color: rgba(255,255,255,0.3);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .idai-team-grid { grid-template-columns: repeat(2, 1fr); }
  .idai-contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .idai-press-assets { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .idai-header { padding: 16px 24px; }
  .idai-nav { display: none; }
  .idai-nav.open {
    display: flex; flex-direction: column;
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: var(--idai-paper); z-index: 999;
    justify-content: center; align-items: center; gap: 24px;
  }
  .idai-nav.open a { font-size: 18px; }
  .idai-menu-toggle { display: block; }
  .idai-hero { padding: 80px 24px 60px; min-height: 80vh; }
  .idai-hero-sub { font-size: 16px; }
  .idai-page-hero { padding: 60px 24px 48px; }
  .idai-page-hero h1 { font-size: 36px; }
  .idai-section { padding: 60px 24px; }
  .idai-section h2 { font-size: 30px; }
  .idai-steps { grid-template-columns: 1fr; gap: 40px; }
  .idai-stats { flex-direction: column; gap: 32px; padding: 40px 24px; }
  .idai-credentials { flex-direction: column; align-items: flex-start; gap: 24px; }
  .idai-bottom-cta { padding: 60px 24px 80px; }
  .idai-bottom-cta p { font-size: 26px; }
  .idai-form-card { padding: 32px 24px; }
  .idai-form-grid { grid-template-columns: 1fr; }
  .idai-project-hero { padding: 60px 24px 0; }
  .idai-project-hero h1 { font-size: 36px; }
  .idai-project-content { padding: 0 24px 60px; }
  .idai-method-cards { grid-template-columns: 1fr; }
  .idai-team-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .idai-atlas-hero { padding: 60px 24px; min-height: 60vh; }
  .idai-atlas-hero h1 { font-size: 36px; }
  .idai-atlas-preview { padding: 0 24px; }
  .idai-atlas-features { grid-template-columns: 1fr; padding: 0 24px; margin: 48px auto; }
  .idai-faq-container { padding: 40px 24px 80px; }
  .idai-text-page { padding: 40px 24px 80px; }
  .idai-contact-grid { padding: 40px 24px 20px; }
  .idai-contact-address { padding: 20px 24px 80px; }
  .idai-footer { padding: 48px 24px 32px; }
  .idai-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .idai-footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .idai-lang-switch { display: none; }
  .idai-press-facts,
  .idai-press-angles,
  .idai-press-assets { padding: 0 24px; }
}

@media (max-width: 480px) {
  .idai-hero { padding: 60px 20px 50px; }
  .idai-hero-cta { padding: 14px 32px; font-size: 13px; }
  .idai-section { padding: 48px 20px; }
  .idai-section h2 { font-size: 26px; }
  .idai-stat-num { font-size: 36px; }
  .idai-footer-grid { grid-template-columns: 1fr; }
  .idai-team-grid { grid-template-columns: 1fr; }
}