/* ============================================================
   AI for Good Consulting — Main Stylesheet
   ============================================================ */

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

:root {
  --primary:    #1a4a3a;   /* deep forest green */
  --accent:     #2e8b57;   /* sea green */
  --light:      #e8f5ee;   /* pale green tint */
  --dark:       #0f2d22;   /* very dark green */
  --text:       #1c1c1c;
  --muted:      #5a6a62;
  --white:      #ffffff;
  --border:     #c8ddd2;
  --shadow:     0 4px 24px rgba(0,0,0,0.10);
  --radius:     10px;
  --font-sans:  'Inter', 'Segoe UI', Arial, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--primary);
  line-height: 1.25;
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 0.5rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.4rem; }
p  { margin-bottom: 1rem; }

/* --- Layout Utilities --- */
.container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 5rem 0; }
.section-alt { background: var(--light); }
.text-center { text-align: center; }
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.section-intro {
  max-width: 640px;
  margin: 0 auto 3rem;
  color: var(--muted);
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
}
.btn-dark {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-dark:hover {
  background: var(--dark);
  border-color: var(--dark);
  color: var(--white);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15, 45, 34, 0.97);
  backdrop-filter: blur(8px);
  padding: 0.9rem 0;
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.25); }
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  font-family: var(--font-serif);
}
.navbar-brand .logo-icon {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  color: white;
  font-weight: 900;
}
.navbar-brand span { line-height: 1.2; }
.navbar-brand small { display: block; font-size: 0.65rem; font-weight: 400; opacity: 0.7; font-family: var(--font-sans); letter-spacing: 0.05em; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links .btn { padding: 0.5rem 1.3rem; font-size: 0.85rem; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 60%, #1e6b48 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/hero.jpg') center/cover no-repeat;
  opacity: 0.18;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(46,139,87,0.25);
  border: 1px solid rgba(46,139,87,0.5);
  color: #7de8a8;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}
.hero h1 {
  color: var(--white);
  margin-bottom: 1.25rem;
}
.hero h1 em {
  font-style: normal;
  color: #7de8a8;
}
.hero p {
  color: rgba(255,255,255,0.82);
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3.5rem;
  flex-wrap: wrap;
}
.stat-item { color: var(--white); }
.stat-item strong { display: block; font-size: 2rem; font-family: var(--font-serif); color: #7de8a8; }
.stat-item span { font-size: 0.85rem; opacity: 0.75; }

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin-top: 1rem;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}
.service-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 52px; height: 52px;
  background: var(--light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.service-card h3 { color: var(--primary); margin-bottom: 0.6rem; }
.service-card p  { color: var(--muted); font-size: 0.95rem; margin: 0; }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}
.about-image img { width: 100%; height: 420px; object-fit: cover; }
.about-badge {
  position: absolute;
  bottom: 1.5rem; left: 1.5rem;
  background: var(--primary);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
}
.about-content .section-label { margin-top: 0; }
.about-content h2 { margin-bottom: 1rem; }
.about-content p  { color: var(--muted); }
.values-list {
  list-style: none;
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.values-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.values-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================================
   FOCUS AREAS
   ============================================================ */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}
.focus-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.focus-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.focus-card .icon { font-size: 2.5rem; margin-bottom: 1rem; }
.focus-card h3 { font-size: 1rem; color: var(--primary); margin-bottom: 0.5rem; }
.focus-card p  { font-size: 0.88rem; color: var(--muted); margin: 0; }

/* ============================================================
   CONTACT & BOOKING
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info p  { color: var(--muted); }
.contact-details { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.25rem; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.contact-item .ci-icon {
  width: 44px; height: 44px;
  background: var(--light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item strong { display: block; font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.15rem; }
.contact-item span  { font-size: 0.95rem; color: var(--text); }

/* Tabs */
.form-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.75rem;
  border-bottom: 2px solid var(--border);
}
.tab-btn {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
}
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* Form */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-success {
  display: none;
  background: var(--light);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  color: var(--primary);
  font-weight: 600;
  margin-top: 1rem;
}

/* ============================================================
   FOUNDERS
   ============================================================ */
.founders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1rem;
}
.founder-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  transition: all var(--transition);
}
.founder-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.founder-avatar {
  flex-shrink: 0;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
}
.founder-initials {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-serif);
}
.founder-info h3 { margin-bottom: 0.2rem; font-size: 1.2rem; }
.founder-title {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}
.founder-info p { color: var(--muted); font-size: 0.93rem; margin-bottom: 0.75rem; }
.founder-email {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
  word-break: break-all;
}
.founder-email:hover { color: var(--primary); }

@media (max-width: 780px) {
  .founders-grid { grid-template-columns: 1fr; }
  .founder-card { flex-direction: column; align-items: center; text-align: center; }
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  padding: 5rem 0;
  text-align: center;
  color: var(--white);
}
.cta-banner h2 { color: var(--white); margin-bottom: 1rem; }
.cta-banner p  { color: rgba(255,255,255,0.82); max-width: 560px; margin: 0 auto 2rem; font-size: 1.05rem; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 1.5rem;
}
.footer-brand { font-size: 0.9rem; }
.footer-brand .navbar-brand { margin-bottom: 1rem; }
.footer-col h4 {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col ul a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--white); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--dark); padding: 1.5rem; gap: 1rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .hero-stats { gap: 1.5rem; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}