/* =========================================================
   Design System – EBook Sidang ke-51 MD Surabaya Timur-1
   ========================================================= */

/* --- Tokens --- */
/* --- Tokens --- */
:root {
  --primary: #213d82;
  /* Vibrant royal blue */
  --primary-light: #2e54ab;
  /* Lighter royal blue */
  --primary-dark: #12192e;
  /* Deep midnight slate navy */
  --primary-deep: #0e1424;
  /* Deepest background navy */

  --royal-blue: #24458f;
  --royal-light: #3b66c7;

  --accent: #7da9ff;
  /* Soft electric ice blue */
  --accent-light: #b8d0ff;
  /* Crisp light ice */
  --accent-dark: #2d60cc;
  --accent-vibrant: #3b74f0;

  --surface: rgba(26, 46, 96, 0.62);
  --surface-hover: rgba(36, 64, 134, 0.85);
  --surface-border: rgba(125, 169, 255, 0.22);
  --text-primary: #ffffff;
  --text-muted: #b8cbf2;
  --text-dim: #768ebf;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-card: 0 8px 32px rgba(8, 14, 34, 0.45), 0 2px 8px rgba(8, 14, 34, 0.3);
  --shadow-glow: 0 0 35px rgba(62, 110, 207, 0.35);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--primary-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

/* =========================================================
   PARTICLES
   ========================================================= */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-light);
  opacity: 0;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }

  10% {
    opacity: 0.35;
  }

  90% {
    opacity: 0.12;
  }

  100% {
    transform: translateY(-10vh) scale(1);
    opacity: 0;
  }
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 6rem;
  overflow: hidden;
  z-index: 1;
}

.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  transform: scale(1.05);
  animation: bg-drift 30s ease-in-out infinite alternate;
  opacity: 0.50;
}

@keyframes bg-drift {
  from {
    transform: scale(1.05) translateX(0);
  }

  to {
    transform: scale(1.08) translateX(-1.5%);
  }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 90% 70% at 75% 20%, rgba(55, 95, 195, 0.5) 0%, transparent 65%),
    radial-gradient(ellipse 70% 60% at 15% 85%, rgba(30, 60, 135, 0.45) 0%, transparent 60%),
    linear-gradient(160deg,
      rgba(33, 61, 130, 0.90) 0%,
      rgba(26, 47, 102, 0.88) 45%,
      rgba(18, 25, 46, 0.98) 100%);
  opacity: 0.85
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

/* --- Header / Logo area --- */
.hero__header {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  text-align: left;
  animation: slide-down 0.8s ease both;
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__logo-wrap {
  flex-shrink: 0;
  width: 90px;
  height: 100px;
  filter: drop-shadow(0 4px 18px rgba(255, 255, 255, 0.45)) drop-shadow(0 0 30px rgba(74, 130, 246, 0.4));
  animation: logo-pulse 4s ease-in-out infinite;
}

@keyframes logo-pulse {

  0%,
  100% {
    filter: drop-shadow(0 4px 18px rgba(255, 255, 255, 0.45)) drop-shadow(0 0 30px rgba(74, 130, 246, 0.4));
  }

  50% {
    filter: drop-shadow(0 4px 28px rgba(255, 255, 255, 0.75)) drop-shadow(0 0 45px rgba(74, 130, 246, 0.7));
  }
}

.hero__logo {
  width: 100%;
  height: 100%;
}

.hero__title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hero__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--text-primary);
}

.hero__title--accent {
  color: var(--accent-light);
  font-style: italic;
}

.hero__subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0.95;
}

.hero__org {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* --- Date Badge --- */
.date-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(33, 61, 130, 0.45);
  border: 1px solid rgba(125, 169, 255, 0.35);
  color: #ffffff;
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  animation: slide-up 0.8s 0.1s ease both;
  backdrop-filter: blur(8px);
}

.date-badge__icon {
  width: 16px;
  height: 16px;
  stroke: var(--accent-light);
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Divider --- */
.hero__divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 300px;
  animation: fade-in 0.8s 0.15s ease both;
}

.hero__divider-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(125, 169, 255, 0.4), transparent);
}

.hero__divider-cross {
  color: var(--accent-light);
  font-size: 0.75rem;
  opacity: 0.9;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* =========================================================
   MENU GRID
   ========================================================= */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 820px;
  animation: slide-up 0.8s 0.2s ease both;
}

/* --- Menu Card --- */
.menu-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: var(--text-primary);
}

.menu-card:not(.menu-card--soon):hover {
  background: var(--surface-hover);
  border-color: rgba(140, 185, 255, 0.55);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-4px) scale(1.01);
}

.menu-card:not(.menu-card--soon):hover .menu-card__icon-wrap {
  background: rgba(55, 95, 195, 0.35);
  border-color: rgba(140, 185, 255, 0.6);
}

.menu-card:not(.menu-card--soon):hover .menu-card__icon {
  stroke: #ffffff;
}

.menu-card:not(.menu-card--soon):hover .menu-card__arrow {
  transform: translateX(4px);
  color: var(--accent-light);
}

/* Coming soon state */
.menu-card--soon {
  cursor: not-allowed;
  opacity: 0.55;
  filter: grayscale(0.2);
}

/* Shine effect */
.menu-card__shine {
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.09), transparent);
  transform: skewX(-15deg);
  transition: left 0.6s ease;
  pointer-events: none;
}

.menu-card:not(.menu-card--soon):hover .menu-card__shine {
  left: 130%;
}

/* Badge */
.menu-card__badge {
  position: absolute;
  top: 10px;
  right: 12px;
  background: rgba(33, 61, 130, 0.5);
  border: 1px solid rgba(125, 169, 255, 0.35);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
}

/* Icon wrap */
.menu-card__icon-wrap {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(35, 62, 130, 0.35);
  border: 1px solid rgba(125, 169, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.menu-card__icon {
  width: 22px;
  height: 22px;
  stroke: var(--text-muted);
  transition: var(--transition);
}

/* Body text */
.menu-card__body {
  flex: 1;
  min-width: 0;
}

.menu-card__label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 2px;
}

.menu-card__title {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.menu-card__meta {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 3px;
}

/* Arrow */
.menu-card__arrow {
  font-size: 1.1rem;
  color: var(--text-dim);
  transition: var(--transition);
  flex-shrink: 0;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 2;
  background: #0f1527;
  border-top: 1px solid rgba(110, 160, 245, 0.2);
  padding: 1rem 1.5rem;
}

.site-footer__inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
}

.site-footer__info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.site-footer__info strong {
  color: #ffffff;
}

.site-footer__sep {
  color: var(--text-dim);
}

.site-footer__link {
  color: var(--text-muted);
  transition: color 0.2s;
}

.site-footer__link:hover {
  color: var(--accent-light);
}

/* =========================================================
   FLIPBOOK PAGE
   ========================================================= */
.flipbook-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: var(--primary-dark);
  overflow: hidden;
}

/* --- Flipbook Nav Bar --- */
.flipbook-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 1.25rem;
  background: #11182c;
  border-bottom: 1px solid rgba(120, 165, 255, 0.2);
  z-index: 100;
  flex-shrink: 0;
  height: 54px;
}

.flipbook-nav__left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.flipbook-nav__meta {
  min-width: 0;
}

.flipbook-nav__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.38rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.flipbook-nav__btn:hover {
  color: #ffffff;
  background: rgba(55, 95, 200, 0.3);
  border-color: rgba(135, 180, 255, 0.5);
}

.flipbook-nav__btn--primary {
  background: rgba(45, 90, 200, 0.85);
  color: #ffffff;
  border-color: rgba(135, 180, 255, 0.5);
}

.flipbook-nav__btn--primary:hover {
  background: #3b74f0;
  color: #ffffff;
}

.flipbook-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.flipbook-nav__logo {
  width: 30px;
  height: 34px;
  flex-shrink: 0;
}

.flipbook-nav__divider {
  width: 1px;
  height: 22px;
  background: rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
}

.flipbook-nav__title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.flipbook-nav__subtitle {
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
}

/* --- Flipbook Container & Sizing --- */
.flipbook-wrap {
  flex: 1;
  position: relative;
  width: 100%;
  height: calc(100vh - 54px);
  min-height: 0;
  overflow: hidden;
  background: #151e36;
}

#df_book_main,
.df-container {
  width: 100% !important;
  height: 100% !important;
}

/* --- Hide PDF.js Text Layer Overlay (Fixes white text appearing over PDF pages) --- */
.textLayerDiv,
.textLayerDiv *,
.df-page-content .textLayerDiv,
.df-page-content .textLayerDiv * {
  color: transparent !important;
  background: transparent !important;
  user-select: text !important;
  -webkit-user-select: text !important;
}

.textLayerDiv ::selection {
  background: rgba(59, 116, 240, 0.35) !important;
}

/* --- Royal Blue Interactive PDF Link Annotations --- */
a.customLinkAnnotation {
  position: absolute !important;
  z-index: 25 !important;
  cursor: pointer !important;
  pointer-events: auto !important;
  background: transparent !important;
  border-bottom: 2px solid rgba(59, 116, 240, 0.75) !important;
  border-radius: 2px !important;
  opacity: 1 !important;
  transition: all 0.2s ease !important;
}

a.customLinkAnnotation:hover {
  background: rgba(59, 116, 240, 0.22) !important;
  border-bottom-color: #ffffff !important;
  box-shadow: 0 0 10px rgba(59, 116, 240, 0.45) !important;
}

/* --- DearFlip Built-in Controls Customization --- */
.df-ui-controls {
  bottom: 12px !important;
  z-index: 50 !important;
}

.df-ui-wrapper,
.df-ui-controls {
  background: rgba(17, 24, 44, 0.94) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(90, 140, 245, 0.35) !important;
  border-radius: 8px !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6) !important;
}

.df-ui-btn {
  color: var(--accent) !important;
  background: transparent !important;
  transition: all 0.2s ease !important;
}

.df-ui-btn:hover,
.df-ui-btn.df-active {
  color: #ffffff !important;
  background: rgba(55, 95, 200, 0.35) !important;
}

.df-sidemenu {
  background: rgba(16, 24, 46, 0.97) !important;
  border-right: 1px solid rgba(90, 140, 245, 0.25) !important;
  color: var(--text-primary) !important;
}

.df-outline-item a {
  color: var(--text-muted) !important;
}

.df-outline-item a:hover {
  color: #ffffff !important;
}

/* --- Table of Contents Drawer --- */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 190;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-backdrop.is-active {
  opacity: 1;
  pointer-events: auto;
}

.flip-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 340px;
  max-width: 85vw;
  height: 100vh;
  background: rgba(15, 22, 42, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-left: 1px solid rgba(90, 140, 245, 0.3);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transform: translateX(105%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.6);
}

.flip-drawer.is-active {
  transform: translateX(0);
}

.flip-drawer__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(90, 140, 245, 0.2);
}

.flip-drawer__title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-light);
}

.flip-drawer__title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-primary);
}

.flip-drawer__close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: color 0.2s;
}

.flip-drawer__close:hover {
  color: #ffffff;
}

.flip-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.toc-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.84rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toc-item:hover {
  background: rgba(45, 85, 185, 0.25);
  border-color: rgba(125, 170, 255, 0.45);
  transform: translateX(3px);
}

.toc-item__title {
  flex: 1;
  line-height: 1.35;
}

.toc-item__page {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(45, 85, 185, 0.4);
  border: 1px solid rgba(125, 170, 255, 0.35);
  padding: 2px 7px;
  border-radius: 999px;
}

/* --- Search Drawer Component --- */
.flip-drawer--search {
  width: 380px;
  max-width: 90vw;
}

.search-drawer__input-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(90, 140, 245, 0.25);
}

.search-drawer__input-icon {
  stroke: var(--accent);
  flex-shrink: 0;
}

.search-drawer__input {
  flex: 1;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 0.92rem;
  outline: none;
  font-family: inherit;
}

.search-drawer__input::placeholder {
  color: var(--text-dim);
}

.search-drawer__status {
  padding: 0.55rem 1.1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.search-drawer__status strong {
  color: var(--accent-light);
}

.search-result-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-primary);
}

.search-result-item:hover {
  background: rgba(45, 85, 185, 0.22);
  border-color: rgba(125, 170, 255, 0.45);
  transform: translateY(-1px);
}

.search-result-item__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search-result-item__badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(45, 85, 185, 0.45);
  border: 1px solid rgba(125, 170, 255, 0.4);
  padding: 2px 7px;
  border-radius: 999px;
}

.search-result-item__action {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.search-result-item:hover .search-result-item__action {
  color: var(--accent-light);
}

.search-result-item__snippet {
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.search-result-item mark {
  background: rgba(59, 116, 240, 0.65);
  color: #ffffff;
  padding: 1px 3px;
  border-radius: 2px;
  font-weight: 600;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 640px) {
  .hero__header {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .hero__logo-wrap {
    width: 72px;
    height: 80px;
  }

  .menu-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .menu-card {
    padding: 1rem 1.1rem;
  }

  .site-footer__info {
    font-size: 0.7rem;
  }

  /* Flipbook mobile adjustments */
  .flipbook-nav {
    padding: 0.4rem 0.65rem;
    height: 50px;
    gap: 0.5rem;
  }

  .flipbook-nav__title {
    max-width: 140px;
    font-size: 0.82rem;
  }

  .flipbook-nav__subtitle {
    display: none;
  }

  .flipbook-nav__actions {
    gap: 0.25rem;
  }

  .flipbook-nav__btn {
    padding: 0.35rem 0.5rem;
    font-size: 0.72rem;
  }

  .flipbook-nav__btn .nav-btn-label {
    display: none;
  }

  .flipbook-wrap {
    height: calc(100vh - 50px);
  }
}

@media (max-width: 400px) {
  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 0.95rem;
  }
}