/* ==========================================================================
   ISKRA EXCHANGE LLC — MASTER STYLESHEET
   Aesthetic: Neo-Glass, Warm Plaster, Veined Mineral Strata, Obsidian
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;1,300;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* --------------------------------------------------------------------------
   1. DESIGN SYSTEM VARIABLES
   -------------------------------------------------------------------------- */
:root {
  --bg-base: #EDE8E1;
  --bg-gradient: radial-gradient(130% 90% at 50% 0%, #F6F2EC 0%, #E3DCCE 45%, #CBBDA9 100%);
  
  --glass-surface: rgba(255, 255, 255, 0.42);
  --glass-surface-hover: rgba(255, 255, 255, 0.65);
  --glass-card: rgba(255, 255, 255, 0.35);
  --glass-highlight: rgba(255, 255, 255, 0.82);
  
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-border-subtle: rgba(184, 168, 150, 0.35);
  --border-accent: #C79A73;
  
  --text-main: #24211D;
  --text-muted: #6C665E;
  --text-light: #9B9489;
  
  --accent-glow: rgba(235, 194, 153, 0.5);
  --accent-warm: #B38661;
  --accent-dark: #1E1A17;
  
  --blur-heavy: blur(24px);
  --blur-soft: blur(12px);
  --radius-pill: 9999px;
  --radius-card: 32px;
  --radius-sm: 14px;
  
  --shadow-glass: 0 20px 40px -15px rgba(68, 56, 44, 0.08), 
                  0 1px 1px 0 rgba(255, 255, 255, 0.85) inset;
  --shadow-elevated: 0 30px 60px -12px rgba(68, 56, 44, 0.16),
                     0 0 30px 4px var(--accent-glow);
}

/* --------------------------------------------------------------------------
   2. BASE & RESET
   -------------------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg-base);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Ambient glow orbs */
.ambient-glow-1 {
  position: fixed;
  top: -15%;
  left: 15%;
  width: 70vw;
  height: 60vh;
  background: radial-gradient(circle, rgba(255, 252, 246, 0.85) 0%, rgba(245, 235, 220, 0) 70%);
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
}

.ambient-glow-2 {
  position: fixed;
  bottom: -10%;
  right: 5%;
  width: 50vw;
  height: 50vh;
  background: radial-gradient(circle, rgba(214, 193, 172, 0.45) 0%, rgba(200, 180, 160, 0) 75%);
  filter: blur(90px);
  z-index: 0;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY & HEADINGS
   -------------------------------------------------------------------------- */
.section-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-warm);
  border: 1px solid var(--border-accent);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.2);
}

.section-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3.4rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--text-main);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 720px;
  font-weight: 300;
  line-height: 1.7;
}

.header-center {
  text-align: center;
  margin-bottom: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* --------------------------------------------------------------------------
   4. NAVIGATION
   -------------------------------------------------------------------------- */
header {
  position: fixed;
  top: 24px;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 0 20px;
}

.nav-capsule {
  width: 100%;
  max-width: 1160px;
  background: var(--glass-surface);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-glass);
  transition: all 0.3s ease;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  cursor: pointer;
}

.brand-logo-img {
  height: 38px;
  width: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--glass-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: 'Cinzel', 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--text-main);
  text-transform: uppercase;
  line-height: 1;
}

.logo-subtitle {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--accent-warm);
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-btn {
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.nav-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.45);
}

.nav-btn.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.nav-cta {
  background: var(--accent-dark);
  color: #FFF !important;
  padding: 9px 22px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  text-decoration: none;
}

.nav-cta:hover {
  background: #383029 !important;
  box-shadow: 0 6px 20px rgba(30, 26, 23, 0.25);
}

/* --------------------------------------------------------------------------
   5. MAIN LAYOUT
   -------------------------------------------------------------------------- */
main {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 130px 24px 70px;
}

/* --------------------------------------------------------------------------
   6. HERO & QUOTE
   -------------------------------------------------------------------------- */
.hero-section-full {
  position: relative;
  width: 100%;
  height: 78vh;
  min-height: 560px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-elevated);
  margin-bottom: 36px;
  background: #CFC5B6;
}

.hero-section-full img.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
  opacity: 0.82;
  filter: contrast(1.04) brightness(1.02);
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
}

.hero-section-full:hover img.hero-bg {
  transform: scale(1.02);
  opacity: 0.9;
}

.hero-section-full::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(245, 241, 235, 0.1) 0%, rgba(30, 26, 23, 0.42) 100%);
  pointer-events: none;
}

.hero-glass-headline {
  position: absolute;
  bottom: 40px;
  left: 40px;
  right: 40px;
  max-width: 740px;
  background: rgba(255, 255, 255, 0.52);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid var(--glass-border);
  border-radius: 26px;
  padding: 30px 38px;
  z-index: 2;
  box-shadow: 0 25px 50px rgba(20, 18, 16, 0.16);
  display: flex;
  gap: 24px;
  align-items: center;
}

.hero-logo-thumbnail {
  width: 86px;
  height: 86px;
  border-radius: 20px;
  object-fit: cover;
  border: 1.5px solid var(--border-accent);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
  background: #EDE8E1;
}

.hero-text-block .eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-dark);
  font-weight: 700;
  margin-bottom: 6px;
  display: block;
}

.hero-text-block h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.6rem;
  line-height: 1.12;
  color: var(--text-main);
  font-weight: 500;
}

.quote-section-under {
  width: 100%;
  background: var(--glass-surface);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--accent-warm);
  border-radius: 22px;
  padding: 44px 50px;
  box-shadow: var(--shadow-glass);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 90px;
}

.quote-section-under .quote-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.1rem;
  font-style: italic;
  line-height: 1.35;
  color: var(--text-main);
  max-width: 950px;
  margin-bottom: 14px;
}

.quote-section-under .quote-author {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-warm);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   7. BUTTONS & SHARED CARDS
   -------------------------------------------------------------------------- */
.btn-checkout, .btn-submit, .btn-book-meeting {
  background: var(--accent-dark);
  color: #FFF;
  border: none;
  padding: 16px 38px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(30, 26, 23, 0.2);
  display: inline-block;
  white-space: nowrap;
}

.btn-checkout:hover, .btn-submit:hover, .btn-book-meeting:hover {
  background: #3A322C;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(30, 26, 23, 0.28);
}

.btn-secondary, .btn-edu-secondary {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 16px 32px;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-secondary:hover, .btn-edu-secondary:hover {
  background: rgba(255, 255, 255, 0.7);
}

.sidebar-card, .standards-card {
  background: var(--glass-card);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-glass);
}

/* --------------------------------------------------------------------------
   8. FOOTER
   -------------------------------------------------------------------------- */
footer {
  position: relative;
  z-index: 10;
  margin-top: 60px;
  padding: 40px 24px 50px;
  display: flex;
  justify-content: center;
}

.footer-capsule {
  width: 100%;
  max-width: 1120px;
  background: var(--glass-surface);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  padding: 34px 44px;
  box-shadow: var(--shadow-glass);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  border-bottom: 1px solid var(--glass-border-subtle);
  padding-bottom: 24px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-link-btn {
  background: transparent;
  border: none;
  outline: none;
  cursor: pointer;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  text-decoration: none;
}

.footer-link-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light);
  flex-wrap: wrap;
  gap: 14px;
}

/* --------------------------------------------------------------------------
   9. RESPONSIVE DESIGN
   -------------------------------------------------------------------------- */
@media (max-width: 980px) {
  .hero-section-full {
    height: 60vh;
    min-height: 420px;
  }
  
  .hero-glass-headline {
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  
  .hero-logo-thumbnail {
    width: 60px;
    height: 60px;
  }
  
  .hero-text-block h1 {
    font-size: 1.9rem;
  }
  
  .quote-section-under {
    padding: 32px 24px;
  }
  
  .quote-section-under .quote-text {
    font-size: 1.5rem;
  }
  
  .section-title {
    font-size: 2.4rem;
  }
  
  .footer-top, 
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    text-align: left;
  }
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}