/* ==========================================================================
   Babunty Devi Sahani Foundation - Design System & Styles
   ========================================================================== */

:root {
  /* Colors */
  --bg-main: #080c15;
  --bg-surface: #0e1524;
  --bg-surface-elevated: #141d31;
  --bg-card: rgba(18, 26, 43, 0.75);
  --bg-card-hover: rgba(25, 36, 60, 0.85);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-emerald: #10b981;
  --accent-emerald-dark: #059669;
  --accent-emerald-light: #34d399;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);

  --accent-amber: #f59e0b;
  --accent-amber-light: #fbbf24;
  --accent-blue: #38bdf8;
  --accent-purple: #c084fc;
  --accent-rose: #fb7185;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-focus: rgba(16, 185, 129, 0.5);

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout & Spacing */
  --max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Background Glows */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  animation: pulseSlow 12s ease-in-out infinite alternate;
}

.glow-1 {
  top: -10%;
  left: 20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.35) 0%, rgba(14, 116, 144, 0) 70%);
}

.glow-2 {
  bottom: 10%;
  right: -5%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.18) 0%, rgba(16, 185, 129, 0) 70%);
}

@keyframes pulseSlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.35; }
  100% { transform: scale(1.15) translate(30px, -20px); opacity: 0.55; }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.25;
  font-weight: 700;
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 10%, #6ee7b7 60%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Glass Panels */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-panel:hover {
  border-color: var(--border-medium);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  text-align: center;
  transition: all var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-emerald-dark) 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--accent-emerald-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-emerald-light) 0%, var(--accent-emerald) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.85rem 1.85rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1.1rem 0;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(8, 12, 21, 0.75);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.site-header.scrolled {
  padding: 0.75rem 0;
  background: rgba(8, 12, 21, 0.92);
  border-bottom-color: var(--border-medium);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-mark svg {
  width: 38px;
  height: 38px;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(16, 185, 129, 0.35));
}

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

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-emerald-light);
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-emerald);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.toggle-bar {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Hero Section */
.hero-section {
  padding: 5.5rem 0 4rem;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-emerald-light);
  margin-bottom: 1.75rem;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2.35rem, 5vw, 3.85rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.25rem;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

/* Metrics */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  margin-top: 1rem;
}

.metric-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.5rem;
}

.metric-number {
  font-family: var(--font-heading);
  font-size: 2.15rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-divider {
  width: 1px;
  height: 50px;
  background: var(--border-subtle);
  margin: 0 auto;
}

/* Section Shared */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header.text-center {
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-emerald-light);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  max-width: 650px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.65;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

.about-card.highlight-card {
  padding: 2.75rem 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
  border-color: rgba(16, 185, 129, 0.2);
}

.about-card.highlight-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-emerald), var(--accent-amber));
}

.about-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

.about-card h3 {
  font-size: 1.75rem;
  line-height: 1.3;
}

.about-quote {
  margin-top: auto;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.about-quote p {
  color: #e2e8f0;
  font-size: 0.95rem;
}

.about-side-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-side-cards .card {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald-light);
}

.icon-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber-light);
}

.icon-blue {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
}

.icon-purple {
  background: rgba(192, 132, 252, 0.15);
  color: var(--accent-purple);
}

.icon-rose {
  background: rgba(251, 113, 133, 0.15);
  color: var(--accent-rose);
}

/* Initiatives (Pillars) */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.pillar-card {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.pillar-card:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.35);
  box-shadow: 0 16px 36px -12px rgba(16, 185, 129, 0.15);
}

.pillar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pillar-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pillar-icon svg {
  width: 24px;
  height: 24px;
}

.pillar-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.pillar-card h3 {
  font-size: 1.45rem;
}

.pillar-bullets {
  list-style: none;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pillar-bullets li {
  font-size: 0.9rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pillar-bullets li::before {
  content: '•';
  color: var(--accent-emerald);
  font-weight: bold;
  font-size: 1.2rem;
  line-height: 1;
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.value-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.value-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-medium);
}

.value-num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-emerald);
  opacity: 0.85;
}

.value-item h4 {
  font-size: 1.15rem;
}

.value-item p {
  font-size: 0.9rem;
  line-height: 1.55;
}

/* Callout Banner */
.callout-banner {
  padding: 3rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin: 2rem 0;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(14, 21, 36, 0.9) 100%);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.callout-content h3 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.callout-content p {
  max-width: 600px;
}

.callout-action {
  flex-shrink: 0;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 2.25rem;
  align-items: flex-start;
}

.contact-info-panel {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.85rem;
}

.info-block {
  display: flex;
  align-items: flex-start;
  gap: 1.15rem;
}

.info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-icon svg {
  width: 22px;
  height: 22px;
}

.info-block h5 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.link-highlight {
  color: #ffffff;
  font-weight: 600;
  word-break: break-all;
}

.link-highlight:hover {
  color: var(--accent-emerald-light);
  text-decoration: underline;
}

.info-hint {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.15rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--accent-emerald-light);
  font-size: 0.85rem;
  font-weight: 500;
}

.contact-form-panel {
  padding: 2.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  position: relative;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #cbd5e1;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(10, 15, 26, 0.8);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-emerald);
  box-shadow: 0 0 0 3px var(--accent-emerald-glow);
}

.form-error {
  display: none;
  font-size: 0.78rem;
  color: var(--accent-rose);
  margin-top: 0.2rem;
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--accent-rose);
}

.form-group.has-error .form-error {
  display: block;
}

.form-success-box {
  text-align: center;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.success-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: bold;
}

.form-success-box h4 {
  font-size: 1.5rem;
  color: #ffffff;
}

.form-success-box p {
  max-width: 440px;
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background: #05080e;
  border-top: 1px solid var(--border-subtle);
  padding: 4.5rem 0 2rem;
  margin-top: 4rem;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.35fr 2fr;
  gap: 3.5rem;
  padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-bio {
  margin-top: 1.25rem;
  font-size: 0.95rem;
  max-width: 380px;
  line-height: 1.6;
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a,
.footer-col span {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--accent-emerald-light);
}

.footer-bottom {
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  .metric-divider {
    display: none;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .pillars-grid {
    grid-template-columns: 1fr;
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .callout-banner {
    flex-direction: column;
    text-align: center;
    padding: 2.25rem 1.75rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(8, 12, 21, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-medium);
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-smooth);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-actions .btn {
    display: none;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links-group {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .values-grid {
    grid-template-columns: 1fr;
  }
  .footer-links-group {
    grid-template-columns: 1fr;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .contact-form-panel {
    padding: 1.5rem;
  }
}