/* ── RVB Associates – Shared Design System ─────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:       #1e8fd5;
  --blue-dark:  #1570aa;
  --blue-deep:  #0d3b6e;
  --navy:       #0b2545;
  --navy-light: #122f5a;
  --white:      #fafbfc;
  --off-white:  #f6f8fb;
  --gray-100:   #f0f4f8;
  --gray-300:   #cbd5e1;
  --gray-500:   #64748b;
  --gray-700:   #334155;
  --text:       #1e293b;
  --radius:     10px;
  --radius-lg:  18px;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.07);
  --shadow-md:  0 4px 20px rgba(0,0,0,.09);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.13);
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; overflow-x: hidden; }
body { font-family: 'Inter', sans-serif; color: var(--text); background: var(--white); line-height: 1.6; overflow-x: hidden; }

/* ── NAV ──────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 4%; height: 72px;
  background: rgba(11,37,69,.92);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: background var(--transition);
}
nav.scrolled { background: rgba(11,37,69,.99); box-shadow: 0 1px 0 rgba(255,255,255,.06), var(--shadow-md); }
.nav-logo { text-decoration: none; flex-shrink: 0; display: flex; align-items: center; }
.nav-logo img { height: 62px; width: auto; display: block; }
.nav-links { display: flex; gap: 1.6rem; list-style: none; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,.7); text-decoration: none; font-size: .82rem; font-weight: 500;
  transition: color var(--transition); white-space: nowrap; letter-spacing: .1px;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }

/* ── NAV DROPDOWN ─────────────────────────────────────────── */
.nav-links .has-dropdown { position: relative; }
.has-dropdown > a { display: flex; align-items: center; gap: .3rem; }
.has-dropdown > a::after {
  content: ''; width: 0; height: 0;
  border-left: 3.5px solid transparent;
  border-right: 3.5px solid transparent;
  border-top: 4px solid rgba(255,255,255,.45);
  margin-top: 1px; transition: transform var(--transition);
}
.has-dropdown:hover > a::after { transform: rotate(180deg); border-top-color: var(--white); }
.dropdown {
  position: absolute; top: calc(100% + 18px); left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: rgba(10,30,60,.98); border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius); padding: .4rem 0; list-style: none;
  min-width: 200px; box-shadow: 0 20px 48px rgba(0,0,0,.35);
  opacity: 0; visibility: hidden;
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
}
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown li a {
  display: block; padding: .65rem 1.3rem; font-size: .82rem;
  color: rgba(255,255,255,.6); white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}
.dropdown li a:hover { color: var(--white); background: rgba(255,255,255,.04); }

.nav-cta {
  background: var(--blue); color: var(--white); border: none;
  padding: .5rem 1.2rem; border-radius: 4px; font-size: .8rem; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: background var(--transition), transform var(--transition);
  white-space: nowrap; flex-shrink: 0; letter-spacing: .1px;
}
.nav-cta:hover { background: var(--blue-dark); transform: translateY(-1px); }

/* ── PAGE HERO (subpages) ─────────────────────────────────── */
.page-hero {
  padding: 140px 5% 90px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 55%, rgba(30,143,213,.12) 100%);
  text-align: center;
}
.page-hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(30,143,213,.12); border: 1px solid rgba(30,143,213,.28);
  color: var(--blue); padding: .3rem .9rem; border-radius: 4px;
  font-size: .72rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  margin-bottom: 1.2rem;
}
.page-hero h1 {
  font-size: clamp(1.9rem, 4.2vw, 3rem); font-weight: 800; color: var(--white);
  line-height: 1.18; letter-spacing: -.75px; margin-bottom: 1rem;
}
.page-hero h1 em { color: var(--blue); font-style: normal; }
.page-hero p { font-size: 1.02rem; color: rgba(255,255,255,.6); max-width: 560px; margin: 0 auto; line-height: 1.8; }
.breadcrumb { font-size: .76rem; color: rgba(255,255,255,.38); margin-bottom: 1rem; }
.breadcrumb a { color: rgba(255,255,255,.38); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); }

/* ── SHARED SECTIONS ──────────────────────────────────────── */
section { padding: 100px 5%; }
.container { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: .68rem; font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--blue); margin-bottom: .7rem;
}
.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: -.5px;
  color: var(--navy); line-height: 1.2; margin-bottom: .9rem;
}
.section-sub { font-size: .97rem; color: var(--gray-500); max-width: 540px; line-height: 1.8; }
.section-header { margin-bottom: 3.5rem; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn-primary {
  background: var(--blue); color: var(--white); border: none;
  padding: .8rem 1.9rem; border-radius: 4px; font-size: .88rem; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-block; letter-spacing: .1px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 18px rgba(30,143,213,.28);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(30,143,213,.38); }
.btn-outline {
  background: transparent; color: var(--navy); border: 1.5px solid var(--blue);
  padding: .8rem 1.9rem; border-radius: 4px; font-size: .88rem; font-weight: 500;
  cursor: pointer; text-decoration: none; display: inline-block;
  transition: background var(--transition), color var(--transition);
}
.btn-outline:hover { background: var(--blue); color: var(--white); }
.btn-outline-white {
  background: transparent; color: rgba(255,255,255,.85); border: 1.5px solid rgba(255,255,255,.28);
  padding: .8rem 1.9rem; border-radius: 4px; font-size: .88rem; font-weight: 500;
  cursor: pointer; text-decoration: none; display: inline-block;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}
.btn-outline-white:hover { border-color: rgba(255,255,255,.65); background: rgba(255,255,255,.07); color: var(--white); }

/* ── CARDS ────────────────────────────────────────────────── */
.card {
  background: var(--white); border-radius: var(--radius-lg); padding: 2rem;
  box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,.05);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative; overflow: hidden;
}
.card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--blue-dark));
  transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.card:hover::after { transform: scaleX(1); }
.card-icon {
  width: 44px; height: 44px; border-radius: 8px;
  background: rgba(30,143,213,.08); display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin-bottom: 1rem;
}
.card h3 { font-size: 1rem; font-weight: 700; color: var(--navy); margin-bottom: .45rem; }
.card p { font-size: .88rem; color: var(--gray-500); line-height: 1.75; }

/* ── CTA BANNER ───────────────────────────────────────────── */
.cta-banner {
  background: var(--navy);
  border-top: 1px solid rgba(30,143,213,.15);
  padding: 90px 5%; text-align: center;
}
.cta-banner h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 800; color: var(--white); letter-spacing: -.5px; margin-bottom: .85rem; }
.cta-banner p { font-size: .97rem; color: rgba(255,255,255,.55); max-width: 460px; margin: 0 auto 2.2rem; line-height: 1.75; }
.cta-banner .btn-white {
  background: var(--white); color: var(--navy); border: none;
  padding: .85rem 2.2rem; border-radius: 4px; font-size: .92rem; font-weight: 700;
  cursor: pointer; text-decoration: none; display: inline-block;
  box-shadow: 0 4px 24px rgba(0,0,0,.22);
  transition: background var(--transition), transform var(--transition);
}
.cta-banner .btn-white:hover { background: var(--off-white); transform: translateY(-2px); }

/* ── FOOTER ───────────────────────────────────────────────── */
footer { background: #070f1e; padding: 60px 5% 28px; border-top: 1px solid rgba(255,255,255,.04); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; max-width: 1100px; margin: 0 auto 2.8rem; }
.footer-logo { font-size: 1.2rem; font-weight: 800; color: var(--white); margin-bottom: .85rem; letter-spacing: -.3px; }
.footer-logo span { color: var(--blue); }
.footer-brand p { font-size: .82rem; color: rgba(255,255,255,.32); line-height: 1.8; max-width: 240px; }
.footer-col h4 { font-size: .66rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: rgba(255,255,255,.28); margin-bottom: 1rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .55rem; }
.footer-col ul a { font-size: .82rem; color: rgba(255,255,255,.48); text-decoration: none; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.06); padding-top: 1.4rem; display: flex; justify-content: space-between; align-items: center; max-width: 1100px; margin: 0 auto; }
.footer-bottom p { font-size: .74rem; color: rgba(255,255,255,.22); }

/* ── FORMS ────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .32rem; margin-bottom: .9rem; }
.form-group label { font-size: .76rem; font-weight: 600; color: var(--gray-700); letter-spacing: .3px; }
.form-group input, .form-group textarea, .form-group select {
  padding: .72rem .95rem; border: 1.5px solid var(--gray-300);
  border-radius: var(--radius); font-family: 'Inter', sans-serif;
  font-size: .88rem; color: var(--text); background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--blue); box-shadow: 0 0 0 3px rgba(30,143,213,.1);
}
.form-group textarea { resize: vertical; min-height: 115px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-submit {
  width: 100%; padding: .85rem; background: var(--blue); color: var(--white); border: none;
  border-radius: 4px; font-size: .92rem; font-weight: 600; cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.form-submit:hover { background: var(--blue-dark); transform: translateY(-1px); }

/* ── HEX PATTERN — all light sections (not dark ones) ─────── */
/* specificity (0,1,1) beats page-level class rules (0,1,0)    */
section:not(.hero):not(.impact-home):not(.page-hero):not(.coming-soon-home) {
  background-color: #f0f2f5;
}

/* ── FADE-UP ANIMATION ────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── HAMBURGER ────────────────────────────────────────────── */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 6px 4px;
  background: none; border: none; flex-shrink: 0;
}
.nav-hamburger span {
  display: block; width: 22px; height: 2px;
  background: rgba(255,255,255,.8); border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
nav.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
nav.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; transform: scaleX(0); }
nav.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  nav { padding: 0 4%; }
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(11,37,69,.98);
    flex-direction: column; padding: .5rem 0 1.2rem;
    border-bottom: 1px solid rgba(255,255,255,.07);
    gap: 0;
  }
  nav.nav-open .nav-links { display: flex; }
  .nav-links > li > a { padding: .75rem 5%; font-size: .9rem; display: block; white-space: normal; }
  .nav-links a { white-space: normal; }
  .has-dropdown > a::after { display: none; }
  .dropdown {
    position: static; opacity: 1; visibility: visible;
    transform: none; background: rgba(255,255,255,.04);
    border-radius: 0; border: none; box-shadow: none;
    min-width: 0; padding: 0;
  }
  .dropdown li a { padding: .55rem 5% .55rem 8%; font-size: .84rem; }
  .nav-cta { font-size: .75rem; padding: .45rem .9rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: .6rem; text-align: center; }
  section { padding: 70px 5%; }
}

/* ── DARK MODE TOGGLE BUTTON ──────────────────────────────── */
.dark-toggle {
  background: none;
  border: 1.5px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.85);
  width: 34px; height: 34px; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; line-height: 1; flex-shrink: 0;
  transition: border-color var(--transition), background var(--transition);
}
.dark-toggle:hover { border-color: rgba(255,255,255,.6); background: rgba(255,255,255,.1); }

/* ── DARK MODE ────────────────────────────────────────────── */
/* --white is intentionally NOT overridden: it is used for text color on dark
   surfaces throughout the site. We override backgrounds explicitly instead. */
[data-theme="dark"] {
  --off-white:  #1a2435;
  --gray-100:   #1a2435;
  --gray-300:   #2d3f55;
  --gray-500:   #8ca0b8;
  --gray-700:   #c4d0dc;
  --text:       #dce8f2;
  --navy:       #c8daea;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.5);
  --shadow-md:  0 4px 20px rgba(0,0,0,.6);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.7);
}

/* Base */
[data-theme="dark"] body { background: #111c2b; }

/* Sections */
[data-theme="dark"] section:not(.hero):not(.impact-home):not(.page-hero):not(.coming-soon-home) {
  background-color: #111c2b;
  background-image: none;
}

/* Cards & components — explicit backgrounds since they use var(--white) */
[data-theme="dark"] .card,
[data-theme="dark"] .svc-card,
[data-theme="dark"] .book-card,
[data-theme="dark"] .testi-card,
[data-theme="dark"] .team-card,
[data-theme="dark"] .value-card,
[data-theme="dark"] .workshop-card,
[data-theme="dark"] .topic-card,
[data-theme="dark"] .format-card,
[data-theme="dark"] .endorsement,
[data-theme="dark"] .compare-card.silence,
[data-theme="dark"] .chapter-list li,
[data-theme="dark"] .info-card,
[data-theme="dark"] .contact-form-wrap,
[data-theme="dark"] .article-card,
[data-theme="dark"] .sidebar-article { background: #1a2435; }
[data-theme="dark"] .featured-card { background: #0c2040; }
[data-theme="dark"] .featured-card p { color: #a8bdd0; }
[data-theme="dark"] .feat-meta { color: #7090a8; }
[data-theme="dark"] .filter-btn { background: #1a2435; color: var(--text); border-color: #2d3f55; }

/* Borders */
[data-theme="dark"] .card,
[data-theme="dark"] .svc-card,
[data-theme="dark"] .book-card,
[data-theme="dark"] .testi-card,
[data-theme="dark"] .team-card,
[data-theme="dark"] .workshop-card,
[data-theme="dark"] .topic-card,
[data-theme="dark"] .info-card,
[data-theme="dark"] .endorsement { border-color: rgba(255,255,255,.07); }
[data-theme="dark"] .compare-card.silence { border-color: #2d3f55; }

/* Intentionally-dark surfaces stay dark */
[data-theme="dark"] .hero { background: #0a1929; }
[data-theme="dark"] .impact-home { background: #0d2240; }
[data-theme="dark"] footer,
[data-theme="dark"] .coming-soon-home { background: #080f1c; }
[data-theme="dark"] .cta-banner { background: linear-gradient(135deg, #080f1c, #0d3b6e); }
[data-theme="dark"] .page-hero { background: linear-gradient(150deg, #060e1a 0%, #0d3b6e 100%); }
[data-theme="dark"] .compare-card.voice,
[data-theme="dark"] .svi-card,
[data-theme="dark"] .free-offer { background: #0c2040; }

/* CTA banner button — dark text on white bg for readable contrast */
[data-theme="dark"] .btn-white { color: #111c2b; }

/* Form inputs */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea { background: #1a2435; color: var(--text); border-color: #2d3f55; }
[data-theme="dark"] input::placeholder { color: #5a7080; }