/* ==========================================================================
   1. ISOLASI THEME & VARIABEL WARNA KHUSUS PILAR (BIRU LANGIT & CYAN)
   ========================================================================== */
:root {
  /* Skema Warna Utama PILAR */
  --pilar-primary: #00B4D8;       /* Biru Langit Cerah Utama */
  --pilar-cyan: #90E0EF;          /* Cyan Soft Accent */
  --pilar-deep-blue: #0A192F;     /* Deep Blue Kontras */
  --pilar-blue-hover: #0077B6;    /* Biru Tua State Hover */
  --pilar-accent-gold: #FFD166;   /* Gold Accent Medalis/Bintang */
  
  /* Background & Text Neutral */
  --pilar-bg-light: #F0F9FF;      /* Light Blue Tint */
  --pilar-bg-white: #FFFFFF;
  --pilar-text-main: #0F172A;
  --pilar-text-muted: #475569;
  --pilar-border: #E2E8F0;
  
  /* Layout & Utility */
  --pilar-max-width: 1200px;
  --pilar-radius-sm: 6px;
  --pilar-radius-md: 12px;
  --pilar-radius-lg: 20px;
  --pilar-shadow-sm: 0 2px 8px rgba(0, 180, 216, 0.08);
  --pilar-shadow-md: 0 6px 16px rgba(0, 180, 216, 0.12);
  --pilar-shadow-lg: 0 12px 28px rgba(10, 25, 47, 0.15);
  --pilar-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Container PILAR */
.pilar-container {
  max-width: var(--pilar-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.cyan-highlight {
  color: var(--pilar-primary);
  background: linear-gradient(135deg, var(--pilar-primary) 0%, #0077B6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   2. SUB-HEADER BARIS 2 (STATIS / PERMANEN NEMPEL)
   ========================================================================== */
.pilar-subnav {
  position: relative; /* Mengabaikan perilaku sticky agar tidak ikut ter-scroll */
  top: 0;
  width: 100%;
  background-color: var(--pilar-deep-blue);
  color: #FFF;
  box-shadow: var(--pilar-shadow-md);
  z-index: 10;
  border-bottom: 2px solid var(--pilar-primary);
}

.pilar-subnav-container {
  max-width: var(--pilar-max-width);
  margin: 0 auto;
  padding: 0.6rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pilar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #FFF;
  font-weight: 800;
  font-size: 1.1rem;
}

.pilar-logo-img {
  height: 32px;
  width: auto;
  object-fit: contain;
}

.pilar-icon {
  font-size: 1.3rem;
}

.pilar-menu {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  list-style: none;
}

.pilar-menu a {
  color: #E2E8F0;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--pilar-radius-sm);
  transition: var(--pilar-transition);
}

.pilar-menu a:hover {
  color: var(--pilar-cyan);
  background: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   3. HERO SECTION PILAR
   ========================================================================== */
.pilar-hero {
  padding: 4rem 0 3rem 0;
  background: linear-gradient(180deg, #E0F2FE 0%, var(--pilar-bg-light) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.pilar-badge {
  display: inline-block;
  background: var(--pilar-deep-blue);
  color: var(--pilar-cyan);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.2rem;
  letter-spacing: 0.5px;
}

.hero-text h1 {
  font-size: 2.5rem;
  line-height: 1.25;
  color: var(--pilar-deep-blue);
  font-weight: 800;
  margin-bottom: 1.2rem;
}

.hero-text p {
  font-size: 1rem;
  color: var(--pilar-text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.pilar-cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.pilar-btn-primary {
  background: var(--pilar-primary);
  color: #FFF;
  padding: 0.8rem 1.8rem;
  border-radius: var(--pilar-radius-md);
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: 0 4px 14px rgba(0, 180, 216, 0.35);
  transition: var(--pilar-transition);
}

.pilar-btn-primary:hover {
  background: var(--pilar-blue-hover);
  transform: translateY(-2px);
}

.pilar-btn-secondary {
  background: var(--pilar-bg-white);
  color: var(--pilar-deep-blue);
  padding: 0.8rem 1.8rem;
  border-radius: var(--pilar-radius-md);
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid var(--pilar-border);
  box-shadow: var(--pilar-shadow-sm);
  transition: var(--pilar-transition);
}

.pilar-btn-secondary:hover {
  border-color: var(--pilar-primary);
  color: var(--pilar-primary);
}

.pilar-banner-img {
  width: 100%;
  border-radius: var(--pilar-radius-lg);
  box-shadow: var(--pilar-shadow-lg);
}

/* ==========================================================================
   4. GRID COMPONENT (FREEMIUM, REGULER, TESTIMONI, TUTOR)
   ========================================================================== */
.pilar-section {
  padding: 4rem 0;
}

.pilar-section.bg-light {
  background-color: var(--pilar-bg-light);
}

.pilar-section-header {
  margin-bottom: 2.5rem;
}

.pilar-section-header h2 {
  font-size: 1.8rem;
  color: var(--pilar-deep-blue);
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.pilar-section-header p {
  color: var(--pilar-text-muted);
  font-size: 0.95rem;
}

.pilar-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pilar-card {
  background: var(--pilar-bg-white);
  padding: 1.8rem;
  border-radius: var(--pilar-radius-md);
  border: 1px solid var(--pilar-border);
  box-shadow: var(--pilar-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--pilar-transition);
  position: relative;
}

.pilar-card:hover {
  border-color: var(--pilar-primary);
  box-shadow: var(--pilar-shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  margin-bottom: 0.8rem;
  width: max-content;
}

.tag-free {
  background: #10B981;
  color: #FFF;
}

.pilar-card h3 {
  font-size: 1.2rem;
  color: var(--pilar-deep-blue);
  margin-bottom: 0.6rem;
}

.pilar-card p {
  font-size: 0.85rem;
  color: var(--pilar-text-muted);
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.pilar-card-link, .pilar-btn-outline {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pilar-primary);
  border: 1px solid var(--pilar-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--pilar-radius-sm);
  text-align: center;
  transition: var(--pilar-transition);
}

.pilar-card-link:hover, .pilar-btn-outline:hover {
  background: var(--pilar-primary);
  color: #FFF;
}

/* ==========================================================================
   5. SEKSI PRESTASI & STATISTIK ALUMNI
   ========================================================================== */
.pilar-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-box {
  background: var(--pilar-deep-blue);
  color: #FFF;
  padding: 2rem 1rem;
  border-radius: var(--pilar-radius-md);
  text-align: center;
  box-shadow: var(--pilar-shadow-md);
  border-bottom: 4px solid var(--pilar-primary);
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--pilar-cyan);
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.85rem;
  color: #E2E8F0;
}

/* Testimoni & Tutor Card Specifics */
.testi-card {
  background: var(--pilar-bg-white);
  padding: 1.5rem;
  border-radius: var(--pilar-radius-md);
  border: 1px solid var(--pilar-border);
}

.testi-text {
  font-style: italic;
  font-size: 0.88rem;
  color: var(--pilar-text-main);
  margin-bottom: 1rem;
}

.testi-user strong {
  display: block;
  color: var(--pilar-deep-blue);
  font-size: 0.9rem;
}

.testi-user span {
  font-size: 0.78rem;
  color: var(--pilar-primary);
  font-weight: 600;
}

.tutor-card {
  text-align: center;
}

.tutor-avatar {
  font-size: 3rem;
  background: var(--pilar-bg-light);
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 2px solid var(--pilar-primary);
}

.tutor-role {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--pilar-primary);
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   6. CTA BANNER WIDGET KE SHOWROOM EVENTS
   ========================================================================== */
.pilar-cta-banner {
  background: linear-gradient(135deg, var(--pilar-deep-blue) 0%, #0077B6 100%);
  color: #FFF;
  padding: 3.5rem 1.5rem;
  margin: 2rem 0 0 0;
  border-radius: 0;
}

.pilar-cta-banner h2 {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.pilar-cta-banner p {
  color: #E0F2FE;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.pilar-btn-gold {
  background: var(--pilar-accent-gold);
  color: var(--pilar-deep-blue);
  padding: 0.8rem 2rem;
  border-radius: var(--pilar-radius-md);
  font-weight: 800;
  font-size: 0.95rem;
  transition: var(--pilar-transition);
}

.pilar-btn-gold:hover {
  background: #FFF;
  transform: translateY(-2px);
}

/* ==========================================================================
   7. RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .pilar-cta-group {
    justify-content: center;
  }
  .pilar-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .pilar-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pilar-subnav-container {
    flex-direction: column;
    gap: 0.5rem;
  }
  .pilar-menu {
    overflow-x: auto;
    width: 100%;
    padding-bottom: 0.3rem;
  }
  .pilar-menu a {
    white-space: nowrap;
    font-size: 0.8rem;
  }
  .pilar-grid-3, .pilar-stats-grid {
    grid-template-columns: 1fr;
  }
}