/* Custom CSS Design System - AcademiaHub */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --primary-navy: #0b192c;
  --navy-light: #1e293b;
  --accent-gold: #d4af37;
  --gold-hover: #b89628;
  --gold-soft: #fef9c3;
  --bg-light: #f8fafc;
  --text-dark: #0f172a;
  --text-muted: #64748b;
  --card-shadow: 0 10px 30px -5px rgba(11, 25, 44, 0.08);
  --hover-transform: translateY(-5px);
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6, .brand-font {
  font-family: 'Outfit', sans-serif;
}

/* Navbar */
.navbar-custom {
  background: var(--primary-navy);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  padding: 0.8rem 1rem;
}

.navbar-brand-title {
  color: #ffffff;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}

.navbar-brand-tag {
  color: var(--accent-gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
}

.nav-link-custom {
  color: #e2e8f0 !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: all 0.3s ease;
}

.nav-link-custom:hover, .nav-link-custom.active {
  color: var(--accent-gold) !important;
}

.btn-gold {
  background: linear-gradient(135deg, #d4af37 0%, #f59e0b 100%);
  color: #000;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.4rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-gold:hover {
  background: linear-gradient(135deg, #b89628 0%, #d97706 100%);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

.btn-navy {
  background: var(--primary-navy);
  color: #fff;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.4rem;
  transition: all 0.3s ease;
}

.btn-navy:hover {
  background: #1e293b;
  color: var(--accent-gold);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #0b192c 0%, #1e293b 100%);
  color: white;
  padding: 4.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
}

.hero-badge {
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-weight: 700;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.isbn-pill {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #f8fafc;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-family: monospace;
  font-size: 0.9rem;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-top: 1rem;
}

.hero-title span {
  color: var(--accent-gold);
}

/* Section Styling */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-navy);
  position: relative;
  margin-bottom: 0.5rem;
}

.section-title-bar {
  width: 60px;
  height: 4px;
  background: var(--accent-gold);
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

.card-custom {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  height: 100%;
}

.card-custom:hover {
  transform: var(--hover-transform);
  box-shadow: 0 15px 35px -5px rgba(11, 25, 44, 0.12);
  border-color: rgba(212, 175, 55, 0.5);
}

/* Discipline Card */
.discipline-icon-box {
  width: 55px;
  height: 55px;
  background: rgba(11, 25, 44, 0.05);
  color: var(--primary-navy);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.3s ease;
}

.card-custom:hover .discipline-icon-box {
  background: var(--accent-gold);
  color: #000;
}

/* Important Dates Timeline */
.date-card {
  background: #ffffff;
  border-left: 4px solid var(--accent-gold);
  border-radius: 12px;
  padding: 1.2rem 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
}

.date-card:hover {
  transform: translateX(5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.date-label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.date-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-navy);
}

/* Publication Fee Card */
.fee-card {
  background: linear-gradient(135deg, #0b192c 0%, #1e293b 100%);
  color: white;
  border-radius: 20px;
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
}

.fee-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-gold);
}

/* Guidelines List */
.guideline-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 1rem;
}

.guideline-icon {
  color: var(--accent-gold);
  font-size: 1.2rem;
  margin-top: 2px;
}

/* Contact Page Cards */
.contact-info-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--card-shadow);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(212, 175, 55, 0.15);
  color: var(--primary-navy);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

/* Footer */
.footer-custom {
  background: var(--primary-navy);
  color: #94a3b8;
  padding: 3rem 0 1.5rem;
  margin-top: 5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-link {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--accent-gold);
}