/* =============================================
   RIO on Fire — Global Stylesheet
   Dark theme matching template design (#0A0E2A)
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;600;700;800&display=swap');

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

:root {
  --bg-deep:      #0A0E2A;
  --bg-card:      #101535;
  --bg-card2:     #151A3A;
  --bg-glass:     rgba(255,255,255,0.04);
  --border:       rgba(255,255,255,0.08);
  --border-accent:rgba(213,82,27,0.4);
  --text-primary: #EDEFF6;
  --text-muted:   #8B9CC8;
  --text-dim:     #5B6BA0;
  --accent-fire:  #D4521B;
  --accent-amber: #E8842A;
  --accent-gold:  #E6B24A;
  --accent-blue:  #3B82F6;
  --gradient-flame: linear-gradient(135deg,#7C1810 0%,#D4521B 40%,#E8842A 80%,#E6B24A 100%);
  --gradient-card:  linear-gradient(135deg, rgba(21,26,58,0.9), rgba(10,14,42,0.95));
  --nav-height:   72px;
  --radius:       12px;
  --radius-lg:    20px;
  --shadow:       0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow:  0 0 40px rgba(212,82,27,0.15);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Typography ─────────────────────────────── */
h1, h2, h3, h4, h5 { font-family: 'Outfit', sans-serif; line-height: 1.2; }
h1 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }
p  { color: var(--text-muted); line-height: 1.75; }
a  { color: var(--accent-amber); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-gold); }
ul { padding-left: 1.4rem; }
li { color: var(--text-muted); margin-bottom: .4rem; }
strong { color: var(--text-primary); font-weight: 600; }

/* ── Navigation ─────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-height);
  background: rgba(10,14,42,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 2rem;
  gap: 1rem;
}

.nav-logo {
  display: flex; align-items: center; gap: .75rem;
  text-decoration: none; flex-shrink: 0;
}
.nav-logo img {
  height: 42px; width: auto; object-fit: contain;
}
.nav-logo-text {
  font-family: 'Outfit', sans-serif;
  font-weight: 700; font-size: 1.1rem;
  color: #FFFFFF;
}

.nav-links {
  display: flex; align-items: center; gap: .25rem;
  list-style: none; padding: 0; margin: 0 auto;
  flex-wrap: wrap;
}
.nav-links a {
  display: block;
  padding: .45rem .75rem;
  border-radius: 8px;
  font-size: .85rem; font-weight: 500;
  color: var(--text-muted);
  transition: all .2s;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}
.nav-links a.active {
  background: rgba(212,82,27,0.15);
  color: var(--accent-amber);
}

.nav-cta {
  flex-shrink: 0;
  padding: .45rem 1.1rem;
  border-radius: 8px;
  background: var(--gradient-flame);
  color: #fff !important;
  font-size: .85rem; font-weight: 600;
  transition: opacity .2s, transform .2s;
}
.nav-cta:hover { opacity: .9; transform: translateY(-1px); color: #fff !important; }

.nav-burger {
  display: none; background: none; border: none; cursor: pointer;
  padding: .5rem; color: var(--text-primary);
  margin-left: auto;
}
.nav-burger svg { width: 24px; height: 24px; fill: currentColor; }

/* ── Page Layout ────────────────────────────── */
.page-wrapper {
  padding-top: var(--nav-height);
  min-height: 100vh;
}

.container {
  max-width: 1200px; margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}
.section-sm { padding: 3rem 0; }

/* ── Hero ───────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  padding: 6rem 0 5rem;
  text-align: center;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(212,82,27,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-block;
  font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent-amber);
  background: rgba(212,82,27,0.12); border: 1px solid rgba(212,82,27,0.25);
  padding: .3rem .8rem; border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero h1 { margin-bottom: 1.25rem; }
.hero-subtitle {
  font-size: clamp(1rem,2vw,1.2rem);
  color: var(--text-muted);
  max-width: 680px; margin: 0 auto 2.5rem;
}
.hero-actions {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
  margin-bottom: 1rem;
}

/* ── Buttons ────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.8rem; border-radius: 10px;
  font-size: .95rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: all .25s;
  text-decoration: none;
}
.btn-primary {
  background: var(--gradient-flame);
  color: #fff;
  box-shadow: 0 4px 20px rgba(212,82,27,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212,82,27,0.5);
  color: #fff;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-accent);
  color: var(--accent-amber);
}
.btn-outline:hover {
  background: rgba(212,82,27,0.1);
  transform: translateY(-2px);
  color: var(--accent-amber);
}
.btn-ghost {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-primary);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
  color: var(--text-primary);
}

/* ── Cards ──────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all .3s;
}
.card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}
.card-grid {
  display: grid; gap: 1.5rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.card-grid-2 { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }

.card-icon {
  font-size: 2.2rem; margin-bottom: 1rem;
  display: block;
}
.card h3 { margin-bottom: .6rem; }
.card p { font-size: .95rem; }

/* ── Section Headers ────────────────────────── */
.section-header {
  text-align: center; margin-bottom: 3.5rem;
}
.section-header .eyebrow {
  display: inline-block;
  font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-amber);
  background: rgba(212,82,27,0.1); border: 1px solid rgba(212,82,27,0.2);
  padding: .25rem .75rem; border-radius: 100px;
  margin-bottom: 1rem;
}
.section-header h2 { margin-bottom: .75rem; }
.section-header p {
  font-size: 1.05rem; max-width: 640px; margin: 0 auto;
}

/* ── Divider ────────────────────────────────── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 3rem 0;
}

/* ── Video Embed ────────────────────────────── */
.video-wrap {
  position: relative; padding-bottom: 56.25%;
  border-radius: var(--radius); overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.video-wrap iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%; border: none;
}
.video-grid {
  display: grid; gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }
.video-grid-2 { grid-template-columns: repeat(2, 1fr); }
.video-center-wrap {
  max-width: 800px; margin: 0 auto;
}

/* ── PDF Embed ──────────────────────────────── */
.pdf-container {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.pdf-container iframe {
  width: 100%; height: 700px; display: block; border: none;
}
.pdf-label {
  font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: var(--accent-amber); margin-bottom: .75rem;
}
.pdf-link-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 1.1rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .25s; cursor: pointer; text-decoration: none;
}
.pdf-link-card:hover {
  border-color: var(--border-accent);
  background: rgba(212,82,27,0.06);
  transform: translateX(4px);
}
.pdf-link-card .pdf-icon {
  font-size: 1.8rem; flex-shrink: 0;
}
.pdf-link-card .pdf-info h4 { font-size: .95rem; margin-bottom: .2rem; color: var(--text-primary); }
.pdf-link-card .pdf-info p  { font-size: .8rem; margin: 0; color: var(--text-muted); }

/* ── Image Block ────────────────────────────── */
.img-block {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border);
}
.img-block img { width: 100%; display: block; }

/* ── Highlight Boxes ────────────────────────── */
.info-box {
  padding: 1.4rem 1.6rem;
  border-radius: var(--radius);
  border-left: 4px solid;
  background: var(--bg-card);
}
.info-box.blue  { border-color: var(--accent-blue);  background: rgba(59,130,246,0.06); }
.info-box.fire  { border-color: var(--accent-fire);  background: rgba(212,82,27,0.06); }
.info-box.amber { border-color: var(--accent-amber); background: rgba(232,132,42,0.06); }
.info-box.gold  { border-color: var(--accent-gold);  background: rgba(230,178,74,0.06); }
.info-box p { margin: 0; }

/* ── Two-column layout ──────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem; align-items: start;
}
.three-col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
}

/* ── Table ──────────────────────────────────── */
.styled-table {
  width: 100%; border-collapse: collapse;
  border-radius: var(--radius); overflow: hidden;
}
.styled-table th {
  background: var(--bg-card2);
  padding: .9rem 1rem;
  text-align: left; font-size: .85rem; font-weight: 600;
  color: var(--text-muted); letter-spacing: .06em; text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}
.styled-table td {
  padding: .85rem 1rem;
  font-size: .9rem; color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.styled-table td strong { color: var(--text-primary); }
.styled-table tr:last-child td { border-bottom: none; }
.styled-table tr:hover td { background: var(--bg-glass); }
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ── Accordion / Expander ───────────────────── */
.expander {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden; margin-bottom: .75rem;
}
.expander-toggle {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.4rem;
  background: var(--bg-card); border: none; cursor: pointer;
  color: var(--text-primary); font-size: .95rem; font-weight: 600;
  font-family: inherit;
  transition: background .2s;
}
.expander-toggle:hover { background: var(--bg-card2); }
.expander-toggle .arrow {
  transition: transform .25s;
  font-size: 1rem;
}
.expander[open] .arrow { transform: rotate(180deg); }
.expander-content {
  padding: 1.4rem;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}
.expander summary { list-style: none; }
.expander summary::-webkit-details-marker { display: none; }
details.expander[open] .arrow { transform: rotate(180deg); }

/* ── Contact Form ───────────────────────────── */
.form-grid { display: grid; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: .45rem; }
.form-group label {
  font-size: .85rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .07em;
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .75rem 1rem;
  color: var(--text-primary);
  font-size: .95rem; font-family: inherit;
  transition: border-color .2s;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-fire);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select option { background: var(--bg-card2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }

/* ── Page Title Banner ──────────────────────── */
.page-banner {
  padding: 4rem 0 3rem;
  text-align: center;
  position: relative; overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% -10%, rgba(212,82,27,0.14) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner .eyebrow {
  display: inline-block;
  font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-amber);
  background: rgba(212,82,27,0.1); border: 1px solid rgba(212,82,27,0.2);
  padding: .25rem .75rem; border-radius: 100px;
  margin-bottom: 1rem;
}
.page-banner h1 { margin-bottom: .75rem; }
.page-banner p {
  font-size: 1.1rem; max-width: 660px; margin: 0 auto;
}

/* ── Case study strip ───────────────────────── */
.case-strip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-fire);
  border-radius: var(--radius);
  padding: 1.5rem 1.8rem;
  margin-bottom: 1.5rem;
}
.case-strip h3 { margin-bottom: .5rem; color: var(--accent-amber); }
.case-strip p { margin-bottom: .4rem; }

/* ── Badge ──────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .2rem .65rem; border-radius: 100px;
  font-size: .75rem; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase;
}
.badge-fire  { background: rgba(212,82,27,0.15); color: var(--accent-amber); border: 1px solid rgba(212,82,27,0.3); }
.badge-blue  { background: rgba(59,130,246,0.15); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.badge-green { background: rgba(34,197,94,0.15);  color: #4ade80;  border: 1px solid rgba(34,197,94,0.3); }

/* ── Phase cards (F.I.R.E. (FDS Interactive Resource Environment)) ───────────────── */
.phase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent-fire);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all .3s;
}
.phase-card:hover {
  border-top-color: var(--accent-amber);
  box-shadow: 0 8px 30px rgba(212,82,27,0.12);
}
.phase-card .phase-num {
  font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-fire); margin-bottom: .5rem;
}
.phase-card h3 { font-size: 1.1rem; margin-bottom: .6rem; }

/* ── Footer ─────────────────────────────────── */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  text-align: center;
  margin-top: 6rem;
}
.footer p { font-size: .85rem; color: var(--text-dim); }
.footer-links {
  display: flex; justify-content: center; gap: 1.5rem;
  list-style: none; padding: 0; margin-bottom: 1rem; flex-wrap: wrap;
}
.footer-links a {
  font-size: .85rem; color: var(--text-dim);
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent-amber); }

/* ── Scroll Animations ──────────────────────── */
.fade-in {
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ─────────────────────────────── */
@media (max-width: 900px) {
  .two-col, .three-col { grid-template-columns: 1fr; }
  .video-grid-3, .video-grid-2 { grid-template-columns: 1fr; }
  .card-grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; }
  .nav-burger { display: flex; }
  .nav { position: fixed; flex-wrap: wrap; height: auto; min-height: var(--nav-height); }
  .nav-links.open {
    position: fixed; top: var(--nav-height); left: 0; right: 0;
    background: rgba(10,14,42,0.98);
    backdrop-filter: blur(20px);
    padding: 1rem 2rem 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: .1rem;
  }
  .nav-cta { display: none; }
  .page-wrapper { padding-top: var(--nav-height); }
}
@media (max-width: 600px) {
  .container { padding: 0 1.25rem; }
  .section { padding: 3.5rem 0; }
  .card { padding: 1.4rem; }
  .pdf-container iframe { height: 450px; }
  .three-col { grid-template-columns: 1fr; }
}