/* Reset & Base with Modern CSS Features */
:root {
  --primary-gradient: linear-gradient(135deg, #900, #d4145a);
  --secondary-gradient: linear-gradient(135deg, #7b0000, #a00000);
  --hover-gradient: linear-gradient(135deg, #a00000, #e60000);
  --card-gradient: linear-gradient(145deg, #1c1c1c, #2e2e2e);
  --dark-bg: #1f1f1f;
  --darker-bg: #2a2a2a;
  --accent-red: #e60000;
  --text-light: #ffffff;
  --text-muted: #dddddd;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 8px 20px rgba(0, 0, 0, 0.7);
  --border-radius: 12px;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  width: 100%;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: linear-gradient(135deg, #ffffff 0%, #ffffff 50%, #ffffff 100%);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Glass morphism effect for containers */
.glass-effect {
  background: rgba(222, 219, 219, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Tajuk dalam class "januari" dengan animasi */
.januari h2 {
  margin: 15px 0 25px 0;
  color: var(--text-light);
  padding: 16px 20px;
  border-radius: var(--border-radius);
  text-align: center;
  background: var(--primary-gradient);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  animation: slideInDown 0.8s ease-out;
}

.januari h2::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s ease;
}

.januari h2:hover::before {
  left: 100%;
}

/* Paragraf dengan enhanced typography */
.januari p {
  margin: 16px 0;
  text-align: justify;
  color: var(--text-light);
  line-height: 1.8;
  font-size: 16px;
  font-weight: 300;
  letter-spacing: 0.3px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Ruang kiri/kanan dengan padding modern */
.januari {
  margin: 0 15px;
  padding: 20px;
}

/* Enhanced Lists with icons */
.januari ul {
  list-style: none;
  margin-left: 0;
}

.januari ul li {
  position: relative;
  padding: 8px 0 8px 35px;
  margin-bottom: 8px;
  animation: fadeInLeft 0.6s ease-out both;
}

.januari ul li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--accent-red);
  font-size: 12px;
  transition: transform 0.3s ease;
}

.januari ul li:hover::before {
  transform: translateX(5px);
}

.januari ul ul {
  margin-left: 20px;
}

.januari ul ul li::before {
  content: '◉';
  color: var(--text-muted);
}

.januari ol {
  list-style: none;
  counter-reset: custom-counter;
  margin-left: 0;
}

.januari ol li {
  counter-increment: custom-counter;
  padding: 10px 0 10px 45px;
  position: relative;
  margin-bottom: 10px;
  animation: fadeInRight 0.6s ease-out both;
}

.januari ol li::before {
  content: counter(custom-counter);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background: var(--primary-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  box-shadow: var(--shadow-sm);
}

/* Advanced Card Styling with 3D effects */
.col-1 {
  flex: 1;
  margin: 20px;
  padding: 30px;
  background: var(--card-gradient);
  border-radius: var(--border-radius);
  box-shadow: 
    var(--shadow-md),
    inset 0 1px 0 rgba(255,255,255,0.1);
  text-align: center;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  animation: scaleIn 0.6s ease-out both;
}

.col-1::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.col-1:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.col-1:hover::before {
  transform: scaleX(1);
}

/* Container utama dengan flex enhancements */
.container-flex {
  display: flex;
  gap: 30px;
  margin-top: 60px;
  padding: 0 20px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeIn 0.8s ease-out;
}

/* Sidebar bulan dengan sticky behavior */
.sidebar {
  width: 250px;
  position: sticky;
  top: 20px;
  height: fit-content;
}

.sidebar a {
  display: block;
  margin-bottom: 15px;
  padding: 15px 20px;
  text-align: center;
  background: var(--secondary-gradient);
  color: var(--text-light);
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  letter-spacing: 0.8px;
  position: relative;
  overflow: hidden;
  animation: slideInLeft 0.6s ease-out both;
}

.sidebar a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s ease;
}

.sidebar a:hover::before,
.sidebar a.active::before {
  left: 100%;
}

.sidebar a:hover,
.sidebar a.active {
  background: var(--hover-gradient);
  transform: translateX(10px) scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Calendar content dengan glass effect */
.calendar {
  flex: 1;
  padding: 30px;
  background: var(--dark-bg);
  border-radius: var(--border-radius);
  color: var(--text-light);
  box-shadow: var(--shadow-md);
  @extend .glass-effect;
  animation: slideInUp 0.8s ease-out 0.3s both;
}

/* Event timeline grid dengan masonry effect */
.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  align-items: start;
}

/* Advanced Event Card */
.event-card {
  background: var(--darker-bg);
  border-radius: var(--border-radius);
  padding: 25px;
  text-align: left;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease-out both;
}

.event-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.event-card:hover {
  transform: translateY(-10px) rotateX(5deg);
  box-shadow: var(--shadow-xl);
}

.event-card:hover::after {
  transform: scaleX(1);
}

/* Header dalam card dengan flex enhancements */
.event-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.event-header img {
  height: 50px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.6));
  transition: transform 0.3s ease;
}

.event-header:hover img {
  transform: scale(1.1) rotate(5deg);
}

/* Tarikh event dengan glow effect */
.date {
  background: var(--accent-red);
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85em;
  font-weight: bold;
  text-transform: uppercase;
  box-shadow: 
    var(--shadow-sm),
    0 0 15px rgba(230, 0, 0, 0.4);
  animation: pulse 2s infinite;
}

/* Title & details dengan typography hierarchy */
.event-body h2 {
  margin: 15px 0;
  font-size: 1.4em;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1.3;
  background: linear-gradient(135deg, #fff, #ccc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.event-body p {
  margin: 8px 0;
  font-size: 0.95em;
  color: var(--text-muted);
  line-height: 1.6;
}

.prize {
  display: inline-block;
  margin-top: 12px;
  padding: 8px 16px;
  background: var(--primary-gradient);
  border-radius: 20px;
  font-weight: bold;
  color: var(--text-light);
  font-size: 0.9em;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.prize::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: rotate(45deg);
  transition: all 0.6s ease;
}

.prize:hover::before {
  left: 100%;
}

.prize:hover {
  transform: scale(1.05);
  box-shadow: 
    var(--shadow-md),
    0 0 20px rgba(212, 20, 90, 0.4);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Enhanced Responsive Design */
@media (max-width: 1200px) {
  .container-flex {
    gap: 20px;
    padding: 0 15px;
  }
  
  .sidebar {
    width: 220px;
  }
}

@media (max-width: 1024px) {
  .timeline {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .container-flex {
    flex-direction: column;
  }
  
  .sidebar {
    position: static;
    width: 100%;
    order: -1;
  }
}

@media (max-width: 768px) {
  .container-flex {
    margin-top: 30px;
    gap: 15px;
  }
  
  .sidebar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
  }
  
  .sidebar a {
    flex: 1 1 calc(33.333% - 10px);
    margin: 5px;
    font-size: 14px;
    padding: 12px 8px;
    min-width: 100px;
  }
  
  .calendar {
    width: 100%;
    padding: 20px;
  }
  
  .event-card {
    padding: 20px;
    font-size: 14px;
  }
  
  .timeline {
    grid-template-columns: 1fr;
  }
  
  .col-1 {
    margin: 10px;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .sidebar a {
    flex: 1 1 calc(50% - 10px);
    font-size: 13px;
  }
  
  .event-header {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  
  .januari {
    margin: 0 10px;
    padding: 15px;
  }
  
  .januari h2 {
    font-size: 1.2em;
    padding: 12px 15px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.6);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}