/* ====================================================================
   TRANG WEB ĐẠI HỘI ĐOÀN TNCS HỒ CHÍ MINH - PHONG CÁCH HAND-DRAWN
   ==================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Mali:ital,wght@0,400;0,600;0,700;1,400&family=Nunito:wght@400;600;700;800&family=Patrick+Hand&display=swap');

:root {
  --primary-blue: #0066cc;
  --primary-blue-dark: #004c99;
  --primary-blue-light: #e0f2fe;
  --primary-red: #e63946;
  --primary-red-dark: #c1121f;
  --primary-red-light: #ffe5e7;
  --gold-yellow: #ffd100;
  --gold-yellow-light: #fff9db;
  --fresh-green: #2a9d8f;
  --fresh-green-light: #e8f5e9;
  --ink-color: #263238;
  --ink-muted: #546e7a;
  --paper-bg: #fbf9f4;
  --card-bg: #ffffff;
  --sketch-border: 3px solid var(--ink-color);
  --sketch-border-thin: 2px solid var(--ink-color);
  
  /* Hand-drawn organic border-radius */
  --sketch-radius-1: 255px 15px 225px 15px / 15px 225px 15px 255px;
  --sketch-radius-2: 20px 255px 20px 255px / 255px 20px 255px 20px;
  --sketch-radius-box: 24px 12px 28px 14px / 14px 26px 12px 24px;
  --sketch-radius-btn: 255px 25px 225px 25px / 25px 225px 25px 255px;

  /* Hand-drawn shadow */
  --sketch-shadow: 4px 5px 0px var(--ink-color);
  --sketch-shadow-hover: 6px 8px 0px var(--ink-color);
  --sketch-shadow-sm: 2px 3px 0px var(--ink-color);
}

/* Base Reset & Notebook Paper Background */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--paper-bg);
  /* Hand-drawn subtle grid/notebook paper pattern */
  background-image: 
    linear-gradient(rgba(0, 102, 204, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 204, 0.04) 1px, transparent 1px);
  background-size: 26px 26px;
  color: var(--ink-color);
  line-height: 1.6;
  overflow-x: hidden;
  word-break: break-word;
}

h1, h2, h3, h4, .handwritten {
  font-family: 'Mali', 'Patrick Hand', cursive, sans-serif;
}

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

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Washi Tape / Push Pin Decorations */
.washi-tape {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%) rotate(-1.5deg);
  width: 110px;
  height: 24px;
  background: rgba(255, 209, 0, 0.85);
  border-left: 2px dashed #b45309;
  border-right: 2px dashed #b45309;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 5;
  pointer-events: none;
}

.washi-tape-blue {
  background: rgba(56, 189, 248, 0.75);
  border-color: #0284c7;
}

.washi-tape-pink {
  background: rgba(255, 93, 143, 0.75);
  border-color: #e63946;
}

.push-pin {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  background: var(--primary-red);
  border: 2px solid var(--ink-color);
  border-radius: 50%;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.25);
  z-index: 5;
}

.push-pin::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 4px;
  height: 4px;
  background: #ffffff;
  border-radius: 50%;
}

/* Hand-drawn Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: 'Mali', cursive, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 12px 26px;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-btn);
  box-shadow: var(--sketch-shadow);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-align: center;
  position: relative;
  user-select: none;
}

.btn:hover {
  transform: translate(-2px, -3px);
  box-shadow: var(--sketch-shadow-hover);
}

.btn:active {
  transform: translate(2px, 3px);
  box-shadow: var(--sketch-shadow-sm);
}

.btn-primary {
  background-color: var(--primary-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #0077e6;
}

.btn-accent {
  background-color: var(--primary-red);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: #ff4757;
}

.btn-yellow {
  background-color: var(--gold-yellow);
  color: var(--ink-color);
}

.btn-yellow:hover {
  background-color: #ffe066;
}

.btn-outline {
  background-color: #ffffff;
  color: var(--ink-color);
}

.btn-outline:hover {
  background-color: #fff9db;
}

/* Header & Navigation */
.navbar-wrap {
  position: sticky;
  top: 15px;
  z-index: 100;
  margin-bottom: 25px;
  padding: 0 20px;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  padding: 10px 24px;
  box-shadow: var(--sketch-shadow);
  backdrop-filter: blur(8px);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(1px 2px 0px rgba(0,0,0,0.15));
  transition: transform 0.3s ease;
}

.nav-brand:hover .nav-logo {
  transform: rotate(8deg) scale(1.08);
}

.nav-titles {
  display: flex;
  flex-direction: column;
}

.nav-title-main {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-blue);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.nav-title-sub {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-red);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-family: 'Mali', cursive, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-color);
  padding: 6px 12px;
  border-radius: 12px;
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  transform: rotate(-1deg);
}

.nav-link.highlight {
  background-color: var(--gold-yellow-light);
  border: 2px dashed #f59e0b;
  color: #b45309;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-action {
  padding: 8px 18px;
  font-size: 0.95rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: var(--sketch-border-thin);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1.3rem;
  cursor: pointer;
}

/* ====================================================================
   HERO SECTION
   ==================================================================== */
.hero-section {
  padding: 30px 0 60px 0;
  position: relative;
}

.hero-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 30px 15px 35px 18px / 18px 32px 16px 30px;
  box-shadow: 6px 8px 0px var(--ink-color);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

/* Background doodle accents */
.doodle-stamp {
  position: absolute;
  top: 30px;
  right: 35px;
  width: 110px;
  height: 110px;
  pointer-events: none;
  z-index: 10;
  opacity: 0.85;
  transition: transform 0.4s ease;
}

.doodle-stamp:hover {
  transform: rotate(5deg) scale(1.1);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: center;
}

.hero-badge-wrap {
  display: inline-block;
  margin-bottom: 16px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--gold-yellow);
  color: var(--ink-color);
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.1rem;
  font-weight: bold;
  padding: 6px 18px;
  border: var(--sketch-border-thin);
  border-radius: var(--sketch-radius-btn);
  box-shadow: var(--sketch-shadow-sm);
  transform: rotate(-1.5deg);
}

.hero-title-main {
  font-size: 2.3rem;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.25;
  margin-bottom: 8px;
}

.hero-title-main span {
  color: var(--primary-red);
  text-decoration: underline wavy var(--gold-yellow) 4px;
}

.hero-unit-name {
  font-family: 'Mali', cursive, sans-serif;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink-color);
  margin-bottom: 6px;
}

.hero-term {
  display: inline-block;
  background: var(--primary-blue-light);
  color: var(--primary-blue-dark);
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.2rem;
  font-weight: bold;
  padding: 4px 14px;
  border: 2px dashed var(--primary-blue);
  border-radius: 8px;
  margin-bottom: 20px;
}

.hero-slogan-box {
  background: #fffbeb;
  border-left: 5px solid var(--gold-yellow);
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 28px;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.06);
}

.slogan-label {
  font-size: 0.85rem;
  font-weight: 800;
  color: #b45309;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.slogan-text {
  font-family: 'Mali', cursive, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-red-dark);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-illustration-wrap {
  position: relative;
  border: var(--sketch-border);
  border-radius: 20px 24px 18px 22px / 22px 18px 24px 20px;
  background: #ffffff;
  padding: 12px;
  box-shadow: 5px 6px 0 var(--ink-color);
  animation: heroFloat 5s ease-in-out infinite;
  overflow: visible;
  transition: transform 0.3s ease;
}

.hero-illustration-wrap:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: 7px 9px 0 var(--ink-color);
}

@keyframes heroFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-8px) rotate(0.6deg);
  }
}

.hero-illustration {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}

/* Floating interactive sparkles and hearts overlay */
.hero-anim-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  border-radius: 14px;
  overflow: hidden;
  z-index: 5;
}

@keyframes floatParticle {
  0%, 100% {
    transform: translateY(0px) scale(1) rotate(0deg);
    opacity: 0.9;
  }
  50% {
    transform: translateY(-12px) scale(1.25) rotate(14deg);
    opacity: 1;
  }
}

.anim-float-star, .anim-float-heart, .anim-float-note {
  position: absolute;
  animation: floatParticle 3s ease-in-out infinite;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  user-select: none;
}

.star-1 { top: 8%; left: 8%; animation-delay: 0s; font-size: 1.4rem; }
.star-2 { top: 12%; right: 12%; animation-delay: 1.2s; font-size: 1.5rem; }
.star-3 { bottom: 25%; left: 6%; animation-delay: 0.6s; font-size: 1.2rem; }
.heart-1 { top: 40%; right: 6%; animation-delay: 1.8s; font-size: 1.3rem; }
.note-1 { top: 22%; left: 28%; animation-delay: 0.9s; font-size: 1.2rem; }
.note-2 { top: 25%; right: 28%; animation-delay: 2.1s; font-size: 1.3rem; }

.hero-float-tag {
  position: absolute;
  bottom: -15px;
  left: 20px;
  background: #ffffff;
  border: var(--sketch-border-thin);
  border-radius: 12px;
  padding: 8px 16px;
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.05rem;
  color: var(--fresh-green);
  font-weight: bold;
  box-shadow: var(--sketch-shadow-sm);
  transform: rotate(-2deg);
}

/* ====================================================================
   SECTION 2: SLOGAN & CORE VALUES
   ==================================================================== */
.values-section {
  padding: 40px 0 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 45px;
  position: relative;
}

.section-tag {
  display: inline-block;
  background: var(--gold-yellow);
  color: var(--ink-color);
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.1rem;
  font-weight: bold;
  padding: 4px 16px;
  border: var(--sketch-border-thin);
  border-radius: var(--sketch-radius-btn);
  transform: rotate(-1deg);
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 650px;
  margin: 8px auto 0;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 24px;
}

.value-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 18px;
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--sketch-shadow);
  transition: all 0.25s ease;
  position: relative;
}

.value-card:hover {
  transform: translateY(-6px) rotate(1deg);
  box-shadow: var(--sketch-shadow-hover);
}

.value-card:nth-child(even):hover {
  transform: translateY(-6px) rotate(-1deg);
}

.value-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.value-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.value-card:nth-child(1) .value-title { color: var(--primary-red); }
.value-card:nth-child(2) .value-title { color: var(--primary-blue); }
.value-card:nth-child(3) .value-title { color: #f59e0b; }
.value-card:nth-child(4) .value-title { color: var(--fresh-green); }
.value-card:nth-child(5) .value-title { color: #8b5cf6; }

.value-desc {
  font-size: 0.92rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* ====================================================================
   SECTION 3: RECAP HOẠT ĐỘNG CHI ĐOÀN (SCRAPBOOK PHOTO WALL)
   ==================================================================== */
.recap-section {
  padding: 60px 0 80px 0;
  position: relative;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.filter-btn {
  background: #ffffff;
  border: var(--sketch-border-thin);
  border-radius: 20px;
  padding: 8px 18px;
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--ink-color);
  cursor: pointer;
  box-shadow: var(--sketch-shadow-sm);
  transition: all 0.2s ease;
}

.filter-btn:hover {
  transform: translate(-2px, -2px);
  background-color: var(--gold-yellow-light);
}

.filter-btn.active {
  background-color: var(--primary-blue);
  color: #ffffff;
  border-color: var(--ink-color);
  transform: rotate(-1.5deg);
}

.scrapbook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 32px 24px;
}

/* Polaroid Scrapbook Card */
.polaroid-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 14px;
  padding: 16px 16px 24px 16px;
  box-shadow: var(--sketch-shadow);
  position: relative;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
}

.polaroid-card:nth-child(3n+1) {
  transform: rotate(-1.2deg);
}

.polaroid-card:nth-child(3n+2) {
  transform: rotate(1.4deg);
}

.polaroid-card:nth-child(3n) {
  transform: rotate(-0.8deg);
}

.polaroid-card:hover {
  transform: translateY(-8px) scale(1.02) rotate(0deg);
  box-shadow: var(--sketch-shadow-hover);
  z-index: 10;
}

.card-tape {
  position: absolute;
  top: -12px;
  left: 30px;
  width: 90px;
  height: 22px;
  background: rgba(255, 209, 0, 0.85);
  border: 1px dashed #d97706;
  transform: rotate(-4deg);
  z-index: 4;
}

.polaroid-card:nth-child(even) .card-tape {
  left: auto;
  right: 30px;
  transform: rotate(5deg);
  background: rgba(56, 189, 248, 0.8);
  border-color: #0284c7;
}

.card-img-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: var(--sketch-border-thin);
  border-radius: 8px;
  background: #f1f5f9;
  position: relative;
  cursor: pointer;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.polaroid-card:hover .card-img-wrap img {
  transform: scale(1.05);
}

.card-category-badge {
  position: absolute;
  bottom: 10px;
  left: 10px;
  max-width: calc(100% - 20px);
  background: rgba(38, 50, 56, 0.88);
  color: #ffffff;
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 0.95rem;
  padding: 3px 10px;
  border-radius: 6px;
  line-height: 1.3;
  overflow-wrap: break-word;
  backdrop-filter: blur(4px);
}

.card-body {
  padding-top: 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.05rem;
  color: var(--ink-muted);
  margin-bottom: 8px;
}

.card-date {
  color: var(--primary-red);
  font-weight: bold;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink-color);
  line-height: 1.35;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.55;
  margin-bottom: 16px;
  flex: 1;
}

.card-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.card-pill {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  background: var(--primary-blue-light);
  color: var(--primary-blue-dark);
  border-radius: 6px;
  border: 1px dashed var(--primary-blue);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px dashed #cbd5e1;
  padding-top: 14px;
}

.card-action {
  font-family: 'Mali', cursive, sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--primary-blue);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}

.card-action[type="button"] {
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
}

.card-action[type="button"]:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.card-action:hover {
  color: var(--primary-red);
}

.card-reactions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.reaction-btn {
  background: none;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  padding: 3px 8px;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.reaction-btn:hover {
  background-color: var(--primary-red-light);
  border-color: var(--primary-red);
}

/* ====================================================================
   SECTION 4: DẤU ẤN BẰNG CON SỐ (INFOGRAPHIC NOTEBOOK)
   ==================================================================== */
.stats-section {
  padding: 50px 0 70px 0;
}

.stats-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  box-shadow: var(--sketch-shadow);
  padding: 40px 30px;
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 30px;
}

.stat-item {
  text-align: center;
  position: relative;
  padding: 15px;
  border-radius: 14px;
  background: var(--paper-bg);
  border: 2px dashed #cbd5e1;
}

.stat-num {
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 3.2rem;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-blue);
  margin-bottom: 6px;
}

.stat-item:nth-child(1) .stat-num { color: var(--primary-blue); }
.stat-item:nth-child(2) .stat-num { color: var(--primary-red); }
.stat-item:nth-child(3) .stat-num { color: var(--fresh-green); }
.stat-item:nth-child(4) .stat-num { color: #f59e0b; }
.stat-item:nth-child(5) .stat-num { color: #8b5cf6; }

.stat-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-color);
  line-height: 1.4;
}

/* ====================================================================
   SECTION 5: GÓC LƯU BÚT & LỜI CHÚC ĐẠI HỘI
   ==================================================================== */
.wishes-section {
  padding: 50px 0 80px 0;
}

.corkboard {
  background: #fbf5eb;
  border: 4px solid #8d6e63;
  border-radius: 20px;
  box-shadow: inset 0 0 20px rgba(141, 110, 99, 0.25), 6px 8px 0 var(--ink-color);
  padding: 35px;
  margin-top: 30px;
  position: relative;
}

.corkboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 25px;
  margin-bottom: 35px;
}

.sticky-note {
  padding: 22px 18px;
  border-radius: 4px;
  box-shadow: 2px 4px 8px rgba(0,0,0,0.12);
  position: relative;
  transition: transform 0.2s;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sticky-note:hover {
  transform: scale(1.04) rotate(0deg) !important;
  z-index: 5;
}

.sticky-yellow { background: #fef08a; border-left: 3px solid #eab308; }
.sticky-blue { background: #bae6fd; border-left: 3px solid #0284c7; }
.sticky-pink { background: #fbcfe8; border-left: 3px solid #db2777; }
.sticky-green { background: #bbf7d0; border-left: 3px solid #16a34a; }

.sticky-msg {
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.25rem;
  color: var(--ink-color);
  line-height: 1.4;
  margin-bottom: 12px;
}

.sticky-author {
  font-family: 'Mali', cursive, sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  text-align: right;
  color: #334155;
}

.wish-form-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 16px;
  padding: 24px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--sketch-shadow);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-family: 'Mali', cursive, sans-serif;
  font-weight: 700;
  margin-bottom: 6px;
  font-size: 1rem;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--ink-color);
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--paper-bg);
  outline: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--primary-blue);
  background: #ffffff;
}

/* ====================================================================
   TRANG VĂN KIỆN ĐẠI HỘI (VANKIEN.HTML)
   ==================================================================== */
.vankien-hero {
  padding: 30px 0 40px 0;
  text-align: center;
}

.page-vankien .nav-brand {
  min-width: 0;
  flex-shrink: 1;
}

.vankien-banner {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  padding: 40px 30px;
  box-shadow: var(--sketch-shadow);
  position: relative;
  margin-bottom: 40px;
}

.page-vankien .vankien-banner-title {
  max-width: 1100px;
  margin: 0 auto 8px;
  font-size: clamp(1.4rem, 3.5vw, 2.3rem);
  line-height: 1.25;
  overflow-wrap: break-word;
}

.vankien-banner-badge {
  max-width: 100%;
  justify-content: center;
  margin-bottom: 12px;
  padding: 6px 14px;
  font-size: clamp(0.88rem, 2.8vw, 1.1rem);
}

.vankien-banner-unit {
  font-family: 'Mali', cursive;
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  color: var(--primary-red);
  line-height: 1.4;
  margin-bottom: 12px;
}

.vankien-banner-copy {
  max-width: 750px;
  margin: 0 auto 24px;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.vankien-banner-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.vankien-banner-actions > .btn {
  flex: 1 1 220px;
  max-width: 300px;
}

.vankien-document-section {
  padding-bottom: 60px;
}

.doc-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.doc-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: var(--sketch-shadow);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.doc-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sketch-shadow-hover);
}

.doc-card-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.doc-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.doc-card-desc {
  font-size: 0.95rem;
  color: var(--ink-muted);
  margin-bottom: 16px;
  flex: 1;
}

/* PDF Viewer Frame & Reader */
.pdf-viewer-section {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 20px;
  box-shadow: 6px 8px 0 var(--ink-color);
  padding: 25px;
  margin-bottom: 50px;
}

.viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 2px dashed #cbd5e1;
  margin-bottom: 20px;
}

.viewer-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink-color);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  min-width: 0;
  line-height: 1.4;
}

.viewer-title > span:first-child {
  min-width: 0;
}

.viewer-actions .btn {
  padding: 8px 16px;
  font-size: 0.9rem;
  white-space: normal;
}

.viewer-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pdf-frame-container {
  width: 100%;
  height: clamp(480px, 75vh, 720px);
  border: 2px solid var(--ink-color);
  border-radius: 12px;
  overflow: hidden;
  background: #475569;
  position: relative;
}

.pdf-frame-container iframe, 
.pdf-frame-container object {
  width: 100%;
  height: 100%;
  border: none;
}

.vankien-downloads {
  margin-top: 50px;
}

.vankien-downloads-header {
  margin-bottom: 24px;
}

.vankien-download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 20px;
}

.vankien-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  min-width: 0;
  padding: 20px;
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 14px;
  box-shadow: var(--sketch-shadow);
}

.vankien-download-card-copy {
  flex: 1 1 180px;
  min-width: 0;
}

.vankien-download-card-btn {
  flex: 0 0 auto;
  padding: 8px 14px;
  font-size: 0.9rem;
}

/* Interactive Tabs for Quick Document Summary */
.doc-summary-box {
  background: #f8fafc;
  border: 2px dashed #94a3b8;
  border-radius: 14px;
  padding: 24px;
  margin-top: 30px;
}

.summary-tabs {
  display: flex;
  gap: 10px;
  border-bottom: 2px solid #cbd5e1;
  padding-bottom: 12px;
  margin-bottom: 20px;
  overflow-x: auto;
}

.summary-tab-btn {
  background: none;
  border: none;
  font-family: 'Mali', cursive, sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink-muted);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.summary-tab-btn.active {
  background: var(--primary-blue);
  color: #ffffff;
}

.summary-tab-content {
  display: none;
  line-height: 1.7;
}

.summary-tab-content.active {
  display: block;
}

/* ====================================================================
   MODAL / LIGHTBOX
   ==================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 20px;
  box-shadow: 8px 12px 0 rgba(0,0,0,0.5);
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px;
  position: relative;
  animation: popIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: #ffffff;
  border: var(--sketch-border-thin);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--ink-color);
  transition: transform 0.2s;
}

.modal-close:hover {
  transform: rotate(90deg) scale(1.1);
}

.modal-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 10;
  border: var(--sketch-border-thin);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 20px;
}

.modal-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-meta {
  margin-bottom: 8px;
  color: var(--primary-red);
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.5;
}

.modal-title {
  margin-bottom: 14px;
  color: var(--primary-blue);
  font-size: 1.6rem;
  line-height: 1.35;
}

.modal-desc {
  margin-bottom: 20px;
}

.modal-category {
  display: inline-flex;
  margin-bottom: 12px;
}

.modal-section-title {
  margin-bottom: 6px;
  color: var(--ink-color);
  font-size: 1.08rem;
}

.modal-activity-detail {
  color: #334155;
  line-height: 1.7;
}

.modal-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

/* ====================================================================
   FOOTER
   ==================================================================== */
.footer {
  background: #ffffff;
  border-top: var(--sketch-border);
  padding: 60px 0 30px 0;
  margin-top: 60px;
  position: relative;
}

.footer-quote-box {
  background: var(--gold-yellow-light);
  border: 2px dashed #f59e0b;
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
}

.footer-quote {
  font-family: 'Mali', cursive, sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary-blue-dark);
  line-height: 1.6;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.footer-bottom {
  text-align: center;
  border-top: 1px dashed #cbd5e1;
  padding-top: 24px;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

/* ====================================================================
   SECTION: CHƯƠNG TRÌNH ĐẠI HỘI (TIMELINE)
   ==================================================================== */
.timeline-section {
  padding: 50px 0 70px 0;
}

.timeline-wrap {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 32px;
  width: 4px;
  background: var(--ink-color);
  border-radius: 2px;
  border-left: 2px dashed #94a3b8;
}

.timeline-item {
  position: relative;
  margin-bottom: 18px;
  padding-left: 72px;
}

.timeline-pin {
  position: absolute;
  left: 16px;
  top: 10px;
  width: 36px;
  height: 36px;
  background: var(--gold-yellow);
  border: var(--sketch-border-thin);
  border-radius: 50%;
  box-shadow: 2px 2px 0 var(--ink-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Mali', 'Patrick Hand', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  z-index: 2;
}

.timeline-item:nth-child(even) .timeline-pin {
  background: #38bdf8;
}

.timeline-item:nth-child(3n) .timeline-pin {
  background: var(--primary-red-light);
}

.timeline-item:nth-child(4n) .timeline-pin {
  background: #bbf7d0;
}

.timeline-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: 14px;
  padding: 14px 20px;
  box-shadow: var(--sketch-shadow-sm);
  transition: all 0.2s ease;
  position: relative;
}

.timeline-card:hover {
  transform: translateX(6px);
  box-shadow: var(--sketch-shadow);
}

.timeline-time {
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.15rem;
  font-weight: bold;
  color: var(--primary-red);
  display: inline-block;
  margin-bottom: 4px;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.45;
  margin-bottom: 0;
}

.timeline-desc {
  font-size: 0.95rem;
  color: #475569;
  line-height: 1.5;
  margin-top: 6px;
}

/* ====================================================================
   DELEGATE QR CODE & MARCH SONG CARD
   ==================================================================== */
.interactive-extras-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 40px;
}

.qr-box {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  padding: 28px;
  box-shadow: var(--sketch-shadow);
  display: flex;
  align-items: center;
  gap: 24px;
  position: relative;
}

.qr-img {
  width: 130px;
  height: 130px;
  flex-shrink: 0;
}

.song-card {
  background: #ffffff;
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  padding: 28px;
  box-shadow: var(--sketch-shadow);
  position: relative;
}

.song-lyrics {
  font-family: 'Patrick Hand', cursive, sans-serif;
  font-size: 1.15rem;
  line-height: 1.6;
  color: #334155;
  background: #fffbeb;
  border: 1px dashed #d97706;
  border-radius: 10px;
  padding: 14px 18px;
  margin-top: 12px;
}

/* Callout Card for Congress Documents */
.vankien-callout-section {
  padding: 28px 0 64px;
}

.vankien-callout-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: linear-gradient(112deg, #ffffff 0%, #eff8ff 64%, #fff6d9 100%);
  border: var(--sketch-border);
  border-radius: var(--sketch-radius-box);
  padding: 36px 40px;
  box-shadow: 6px 7px 0 var(--ink-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.vankien-callout-card::before {
  content: '';
  position: absolute;
  z-index: -1;
  right: -88px;
  bottom: -146px;
  width: 300px;
  height: 300px;
  border: 2px dashed rgba(0, 102, 204, 0.22);
  border-radius: 50%;
  background: rgba(255, 209, 0, 0.16);
  box-shadow: 0 0 0 18px rgba(255, 255, 255, 0.28), 0 0 0 38px rgba(0, 102, 204, 0.04);
  pointer-events: none;
}

.vankien-callout-card::after {
  content: '✦';
  position: absolute;
  top: 12px;
  right: 24px;
  color: var(--primary-red);
  font-size: 2.2rem;
  line-height: 1;
  text-shadow: 2px 2px 0 var(--gold-yellow);
  transform: rotate(12deg);
  pointer-events: none;
}

.vankien-callout-content {
  position: relative;
  z-index: 1;
  flex: 1 1 520px;
  max-width: 780px;
}

.vankien-callout-label {
  margin-bottom: 14px;
  padding: 7px 18px;
}

.vankien-callout-title {
  margin-bottom: 10px;
  color: var(--primary-blue);
  font-size: clamp(1.5rem, 2.7vw, 2rem);
  line-height: 1.3;
}

.vankien-callout-title::after {
  content: '';
  display: block;
  width: 104px;
  height: 5px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--gold-yellow);
  transform: rotate(-1.5deg);
}

.vankien-callout-copy {
  max-width: 70ch;
  color: var(--ink-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.vankien-callout-btn {
  position: relative;
  z-index: 1;
  font-size: 1.15rem;
  padding: 15px 26px;
  white-space: nowrap;
}

.vankien-callout-arrow {
  font-size: 1.35em;
  line-height: 1;
  transition: transform 0.2s ease;
}

.vankien-callout-btn:hover .vankien-callout-arrow {
  transform: translateX(3px);
}

/* ====================================================================
   RESPONSIVE QUERIES (COMPREHENSIVE MULTI-DEVICE SUPPORT)
   ==================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-visual {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .navbar-wrap {
    padding: 0 8px;
    top: 8px;
  }
  .navbar {
    padding: 8px 16px;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 8px;
    right: 8px;
    background: #ffffff;
    border: var(--sketch-border);
    border-radius: 16px;
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    box-shadow: var(--sketch-shadow);
    z-index: 1000;
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-link {
    display: block;
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
  }
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero-card {
    padding: 24px 16px;
    border-radius: 20px;
  }
  .hero-title-main {
    font-size: 1.85rem;
  }
  .hero-unit-name {
    font-size: 1.2rem;
  }
  .hero-term {
    font-size: 1.05rem;
  }
  .hero-slogan-box {
    padding: 12px 14px;
    margin-bottom: 22px;
  }
  .slogan-text {
    font-size: 1.05rem;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
  }

  .section-title {
    font-size: 1.8rem;
  }
  .section-subtitle {
    font-size: 1rem;
  }

  .scrapbook-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .polaroid-card, .sticky-note {
    transform: none !important;
  }

  .interactive-extras-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .qr-box {
    flex-direction: column;
    text-align: center;
    padding: 20px;
  }

  .pdf-viewer-section {
    padding: 16px;
  }
  .viewer-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .viewer-title {
    font-size: 1.15rem;
  }
  .viewer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .viewer-actions .btn {
    flex: 1;
    min-width: 120px;
    font-size: 0.85rem;
    padding: 8px 10px;
  }
  .pdf-frame-container {
    height: 480px;
  }

  .corkboard {
    padding: 20px 14px;
  }
  .corkboard-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .wish-form-card {
    padding: 18px 14px;
  }

  .vankien-callout-card {
    padding: 24px 16px;
    flex-direction: column;
    text-align: center;
    align-items: stretch;
    gap: 16px;
  }
  .vankien-callout-card::after {
    display: none;
  }
  .vankien-callout-content {
    flex-basis: auto;
    max-width: none;
  }
  .vankien-callout-title::after {
    margin-right: auto;
    margin-left: auto;
  }
  .vankien-callout-copy {
    font-size: 1rem;
  }
  .vankien-callout-btn {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    white-space: normal;
  }

  .vankien-banner {
    padding: 24px 16px;
    margin-bottom: 24px;
    border-radius: 18px;
  }
  .doc-overview-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 576px) {
  .nav-logo {
    width: 38px;
    height: 38px;
  }
  .nav-title-main {
    font-size: 0.92rem;
    line-height: 1.15;
  }
  .nav-title-sub {
    font-size: 0.68rem;
    letter-spacing: 0.5px;
  }
  .nav-cta {
    gap: 8px;
  }
  .nav-cta .btn-celebrate {
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .hero-title-main {
    font-size: 1.6rem;
  }
  .hero-float-tag {
    font-size: 0.9rem;
    padding: 6px 12px;
    bottom: -10px;
    left: 10px;
  }

  /* Timeline mobile compactness */
  .timeline-wrap {
    padding: 10px 0;
  }
  .timeline-wrap::before {
    left: 18px;
  }
  .timeline-item {
    padding-left: 48px;
    margin-bottom: 20px;
  }
  .timeline-pin {
    width: 28px;
    height: 28px;
    left: 5px;
    top: 10px;
    font-size: 0.8rem;
  }
  .timeline-card {
    padding: 12px 14px;
  }
  .timeline-title {
    font-size: 1.05rem;
  }
  .timeline-desc {
    font-size: 0.88rem;
  }

  /* Stats grid 2 columns on small screens */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .stat-item {
    padding: 10px 8px;
  }
  .stat-num {
    font-size: 2.2rem;
  }
  .stat-label {
    font-size: 0.85rem;
  }

  /* Filters */
  .filter-bar {
    gap: 8px;
    margin-bottom: 24px;
  }
  .filter-btn {
    padding: 6px 12px;
    font-size: 0.95rem;
  }

  /* Modal */
  .modal-card {
    padding: 20px 14px;
    margin: 8px;
  }
  .modal-close {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
    top: 10px;
    right: 10px;
  }

  /* Summary tabs in vankien.html */
  .summary-tabs {
    padding-bottom: 8px;
    gap: 6px;
  }
  .summary-tab-btn {
    font-size: 0.9rem;
    padding: 6px 10px;
  }
  .pdf-frame-container {
    height: 380px;
  }
}

@media (max-width: 400px) {
  .nav-title-sub {
    display: block;
    font-size: 0.58rem;
    line-height: 1.15;
    letter-spacing: 0.15px;
  }
  .nav-brand {
    min-width: 0;
    gap: 8px;
  }
  .nav-titles {
    min-width: 0;
  }
  .nav-title-main {
    font-size: 0.78rem;
    line-height: 1.1;
    letter-spacing: 0.1px;
  }
  .nav-action {
    display: none;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .hero-title-main {
    font-size: 1.4rem;
  }
}

/* Responsive layout for the longer document-page navigation and content */
@media (max-width: 1100px) {
  .page-vankien .navbar {
    position: relative;
  }

  .page-vankien .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    right: 0;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 14px;
    background: #ffffff;
    border: var(--sketch-border);
    border-radius: 16px;
    box-shadow: var(--sketch-shadow);
    z-index: 1000;
  }

  .page-vankien .nav-menu.active {
    display: flex;
  }

  .page-vankien .nav-link {
    display: block;
    width: 100%;
    padding: 10px 14px;
  }

  .page-vankien .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .page-vankien .vankien-hero {
    padding: 20px 0 32px;
  }

  .page-vankien .vankien-banner {
    padding: 28px 20px;
    margin-bottom: 28px;
  }

  .page-vankien .doc-overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-vankien .pdf-viewer-section {
    padding: 20px;
  }

  .page-vankien .viewer-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .page-vankien .viewer-title {
    font-size: 1.1rem;
  }

  .page-vankien .viewer-actions {
    width: 100%;
    gap: 8px;
  }

  .page-vankien .viewer-actions .btn {
    flex: 1 1 180px;
    min-width: 0;
    padding: 8px 10px;
    font-size: 0.85rem;
  }

  .page-vankien .pdf-frame-container {
    height: clamp(360px, 68vh, 560px);
  }

  .page-vankien .vankien-document-section {
    padding-bottom: 40px;
  }
}

@media (max-width: 576px) {
  .page-vankien .nav-action {
    display: none;
  }

  .page-vankien .nav-brand {
    gap: 10px;
  }

  .page-vankien .nav-titles {
    min-width: 0;
  }

  .page-vankien .nav-title-main {
    font-size: clamp(0.68rem, 3.2vw, 0.9rem);
    letter-spacing: 0.2px;
    white-space: normal;
  }

  .page-vankien .vankien-banner {
    padding: 24px 16px;
  }

  .page-vankien .vankien-banner-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-vankien .vankien-banner-actions > .btn {
    flex: 1 1 auto;
    width: 100%;
    max-width: none;
  }

  .page-vankien .doc-overview-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-vankien .pdf-viewer-section {
    padding: 14px;
  }

  .page-vankien .pdf-frame-container {
    height: clamp(320px, 60vh, 480px);
  }

  .page-vankien .vankien-download-card {
    flex-direction: column;
    align-items: stretch;
  }

  .page-vankien .vankien-download-card-btn {
    width: 100%;
  }

  .page-vankien .vankien-downloads-header .section-title {
    font-size: clamp(1.3rem, 5vw, 1.8rem);
  }
}

/* Print Stylesheet */
@media print {
  .navbar-wrap, .nav-cta, .btn-celebrate, .hero-buttons, .filter-bar, .card-reactions,
  .wish-form-card, .footer-quote-box, .modal-overlay {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .hero-card, .timeline-card, .doc-card, .pdf-viewer-section {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}