/* 
 * MABN Holding Corporate Stylesheet
 * Brand: PT Mitra Bumi Andalan Nusantara (MABN)
 * Design System: Minimalist Corporate Executive (McKinsey / BlackRock Style)
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  /* Design Tokens - Colors */
  --primary: #0F62FE;           /* Bright Corporate Blue */
  --primary-hover: #034ad9;
  --secondary: #1E40AF;         /* Deep Blue */
  --accent: #38BDF8;            /* Sky Blue */
  
  --bg-main: #FFFFFF;
  --bg-section: #F8FAFC;
  --bg-card: #FFFFFF;
  
  --text-dark: #0F172A;         /* Slate 900 */
  --text-body: #475569;         /* Slate 600 */
  --border-color: #E2E8F0;      /* Slate 200 */
  --border-hover: #cbd5e1;      /* Slate 300 */
  
  /* Shadows & Layout */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-section);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-body);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-body);
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Plus Jakarta Sans', sans-serif;
  letter-spacing: -0.02em;
  color: var(--text-dark);
}

/* Header States */
.glass-header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.header-transparent {
  background: transparent;
  border-bottom: 1px solid transparent;
}

/* Corporate Cards */
.corp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 8px;
}

.corp-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

/* Subtle Shimmer Button */
.btn-shimmer {
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}
.btn-shimmer::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(30deg);
  transition: transform 0.6s ease;
  pointer-events: none;
}
.btn-shimmer:hover::after {
  transform: translate(50%, 50%) rotate(30deg);
}

/* Subtle motion transitions */
.reveal {
  opacity: 0;
  transform: translateY(15px);
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Navigation active class */
.nav-active {
  color: var(--primary) !important;
  font-weight: 600;
  border-bottom: 2px solid var(--primary);
}

/* Partners Logo Grid */
.partner-logo {
  filter: grayscale(100%) opacity(50%);
  transition: all 0.2s ease;
}
.partner-logo:hover {
  filter: grayscale(0%) opacity(80%);
}

/* Stat section line split */
.stats-split-line {
  position: relative;
}
@media (min-width: 768px) {
  .stats-split-line::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background-color: var(--border-color);
  }
}

/* FAQ Accordion Styling */
.faq-item {
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item:hover {
  border-color: var(--border-hover);
}
.faq-header {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  font-weight: 600;
  color: var(--text-dark);
}
.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 1.5rem;
}
.faq-body-content {
  padding-bottom: 1.25rem;
  font-size: 0.875rem;
  line-height: 1.625;
  color: var(--text-body);
}
.faq-icon-svg {
  transition: transform 0.3s ease;
  color: var(--text-body);
}
.faq-item.active .faq-icon-svg {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-item.active .faq-body {
  max-height: 500px;
}

/* Vertical Timeline Styling */
.vertical-timeline {
  position: relative;
  padding-left: 2rem;
}
@media (min-width: 768px) {
  .vertical-timeline {
    padding-left: 0;
  }
  .vertical-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background-color: var(--border-color);
    transform: translateX(-50%);
  }
}
.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
}
.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 0.25rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--primary);
  border: 3px solid var(--bg-main);
  box-shadow: 0 0 0 3px rgba(15, 98, 254, 0.15);
  transform: translateX(-50%);
  z-index: 10;
}
@media (min-width: 768px) {
  .timeline-marker {
    left: 50%;
  }
}

/* Corporate Structure Organizational Chart */
.org-chart-wrapper {
  position: relative;
  display: flex;
  flex-col: column;
  align-items: center;
  gap: 2rem;
}
.org-line {
  width: 1px;
  height: 2rem;
  background-color: var(--border-color);
}
.org-grid-connect {
  position: relative;
}
@media (min-width: 1024px) {
  .org-grid-connect::before {
    content: '';
    position: absolute;
    top: -2rem;
    left: 12.5%;
    right: 12.5%;
    height: 1px;
    background-color: var(--border-color);
  }
}