/* ========================================
   EVENTOSHSU - Modern Design System
   ======================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
  --color-primary: hsl(230, 95%, 60%);
  --color-primary-light: hsl(230, 95%, 70%);
  --color-primary-dark: hsl(230, 95%, 50%);
  --color-secondary: hsl(270, 85%, 60%);
  --color-accent: hsl(340, 85%, 60%);
  --color-accent-orange: hsl(25, 95%, 60%);

  --color-success: hsl(150, 70%, 45%);
  --color-warning: hsl(40, 95%, 55%);
  --color-danger: hsl(0, 85%, 60%);
  --color-info: hsl(200, 85%, 55%);

  --color-white: hsl(0, 0%, 100%);
  --color-gray-50: hsl(220, 20%, 98%);
  --color-gray-100: hsl(220, 15%, 95%);
  --color-gray-200: hsl(220, 13%, 91%);
  --color-gray-300: hsl(220, 10%, 80%);
  --color-gray-400: hsl(220, 8%, 65%);
  --color-gray-500: hsl(220, 6%, 46%);
  --color-gray-600: hsl(220, 8%, 35%);
  --color-gray-700: hsl(220, 10%, 25%);
  --color-gray-800: hsl(220, 15%, 15%);
  --color-gray-900: hsl(220, 20%, 10%);

  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-orange) 100%);
  --gradient-success: linear-gradient(135deg, hsl(150, 70%, 45%) 0%, hsl(170, 70%, 40%) 100%);
  --gradient-hero: linear-gradient(135deg, hsl(230, 95%, 60%) 0%, hsl(270, 85%, 60%) 50%, hsl(340, 85%, 60%) 100%);

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);
  --shadow-glow: 0 0 20px rgba(96, 105, 253, 0.35);
  --shadow-glow-accent: 0 0 25px rgba(255, 71, 140, 0.4);

  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1050;
  --z-tooltip: 1070;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-primary);
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); }

/* ========================================
   Utility Classes
   ======================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ========================================
   Navigation Bar
   ======================================== */
.navbar-modern {
  background: var(--gradient-primary);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar-modern.scrolled {
  box-shadow: var(--shadow-lg);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-white) !important;
  letter-spacing: -0.02em;
  transition: transform var(--transition-fast);
}

.navbar-brand:hover {
  transform: scale(1.05);
  color: var(--color-white) !important;
}

.nav-link {
  color: rgba(255,255,255,0.9) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background: rgba(255,255,255,0.15);
  color: var(--color-white) !important;
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
  background: var(--gradient-hero);
  padding: var(--spacing-3xl) 0 calc(var(--spacing-3xl) + 60px);
  position: relative;
  overflow: hidden;
  color: var(--color-white);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
  pointer-events: none;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-20px) rotate(5deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ========================================
   Search / Filter Bar
   ======================================== */
.search-filter-section {
  background: var(--color-white);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 66px;
  z-index: 100;
}

.search-bar-wrapper {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 200px;
  padding: 0.65rem 1rem 0.65rem 2.75rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  background: var(--color-gray-50);
  transition: all var(--transition-base);
  outline: none;
}

.search-input:focus {
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(96, 105, 253, 0.1);
}

.search-icon-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-icon-wrap i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-400);
  pointer-events: none;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  background: var(--color-white);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: hsl(230, 95%, 97%);
}

.filter-btn.active {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: transparent;
}

/* ========================================
   Events Grid  ← THE KEY FIX
   ======================================== */
.events-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  align-items: start;   /* prevents cards stretching to row height */
}

@media (max-width: 992px) {
  .events-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
  .events-grid { grid-template-columns: 1fr; }
}

/* ========================================
   Event Cards  ← FIXED IMAGE + OVERFLOW
   ======================================== */
.event-card-modern {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  overflow: hidden;          /* critical: clips image on hover scale */
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.event-card-modern::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 1;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.event-card-modern:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.event-card-modern:hover::before {
  opacity: 1;
}

/* ── Image Container ── */
.event-img-container {
  position: relative;
  width: 100%;
  height: 210px;        /* fixed height */
  overflow: hidden;     /* clips the scaled image */
  flex-shrink: 0;       /* never shrinks */
}

.event-img-modern {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.event-card-modern:hover .event-img-modern {
  transform: scale(1.08);   /* scale is clipped by parent overflow:hidden */
}

/* ── Placeholder (no image) ── */
.event-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-slow);
}

.event-card-modern:hover .event-img-placeholder {
  transform: scale(1.05);
}

/* ── Status Badge on image ── */
.event-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 2;
}

/* ── Card Body ── */
.event-body-modern {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.event-title-modern {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-900);
  line-height: 1.3;
  /* clamp to 2 lines, no overflow */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.event-meta-modern {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.event-meta-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.event-description-modern {
  color: var(--color-gray-600);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  flex: 1;
  /* clamp to 3 lines */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Card Footer Buttons ── */
.event-footer-modern {
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-gray-100);
}

.btn-group-modern {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: nowrap;
  align-items: center;
}

.btn-group-modern .btn-modern {
  flex: 1;
  min-width: 0;         /* allow flex shrink */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.875rem;
  padding: 0.55rem 0.875rem;
}

/* ========================================
   Glassmorphism Cards
   ======================================== */
.glass-card {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

/* ========================================
   Stats Cards
   ======================================== */
.stats-counter {
  font-family: var(--font-display);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 2.25rem;
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

/* ========================================
   Buttons
   ======================================== */
.btn-modern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.7rem 1.4rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-modern::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.btn-modern:hover::after {
  background: rgba(255,255,255,0.12);
}

.btn-primary-modern {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn-primary-modern:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  color: var(--color-white);
}

.btn-success-modern {
  background: var(--gradient-success);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn-success-modern:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: var(--color-white);
}

.btn-accent-modern {
  background: var(--gradient-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}
.btn-accent-modern:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow-accent);
  color: var(--color-white);
}

.btn-outline-modern {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline-modern:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ========================================
   Badges & Pills
   ======================================== */
.badge-modern {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: var(--color-white);
  white-space: nowrap;
}

.badge-archive { background: var(--color-gray-500); }
.badge-success { background: var(--gradient-success); }
.badge-warning { background: linear-gradient(135deg, hsl(40,95%,55%), hsl(25,95%,60%)); }

/* ========================================
   Form Controls
   ======================================== */
.form-control-modern {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  transition: all var(--transition-base);
  outline: none;
}

.form-control-modern:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(96,105,253,0.1);
}

.form-label-modern {
  display: block;
  font-weight: 600;
  color: var(--color-gray-800);
  margin-bottom: var(--spacing-sm);
  font-size: 0.95rem;
}

.form-group-modern { margin-bottom: var(--spacing-lg); }

/* ========================================
   Animations
   ======================================== */
.fade-in {
  animation: fadeIn 0.4s ease-out both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.slide-up {
  animation: slideUp 0.5s ease-out both;
}

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

/* Stagger delays for grid cards */
.events-grid .event-card-modern:nth-child(1) { animation-delay: 0.05s; }
.events-grid .event-card-modern:nth-child(2) { animation-delay: 0.10s; }
.events-grid .event-card-modern:nth-child(3) { animation-delay: 0.15s; }
.events-grid .event-card-modern:nth-child(4) { animation-delay: 0.20s; }
.events-grid .event-card-modern:nth-child(5) { animation-delay: 0.25s; }
.events-grid .event-card-modern:nth-child(6) { animation-delay: 0.30s; }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   Back to Top Button
   ======================================== */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: var(--z-fixed);
}

#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  color: var(--color-gray-500);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

/* ========================================
   Toast / Alert Messages
   ======================================== */
.toast-container-custom {
  position: fixed;
  top: 80px;
  right: var(--spacing-lg);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* ========================================
   Footer
   ======================================== */
.footer-modern {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-modern a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

.footer-modern a:hover { color: var(--color-white); }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 992px) {
  .hero-title { font-size: 2.75rem; }
}

@media (max-width: 768px) {
  :root { --spacing-3xl: 2.5rem; }

  .hero-title { font-size: 2.25rem; }
  .hero-subtitle { font-size: 1.05rem; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }

  .event-card-modern:hover { transform: translateY(-4px); }

  .search-filter-section { position: static; }
}

@media (max-width: 576px) {
  .hero-title { font-size: 1.9rem; }
  .hero-section { padding: var(--spacing-2xl) 0 calc(var(--spacing-2xl) + 40px); }

  .event-img-container { height: 185px; }

  #back-to-top { bottom: 1.25rem; right: 1.25rem; }
}

/* ========================================
   Dark Mode (opt-in via .dark-mode on body)
   ======================================== */
body.dark-mode {
  background-color: var(--color-gray-900);
  color: var(--color-gray-200);
}

body.dark-mode .glass-card {
  background: rgba(20, 20, 35, 0.85);
  border-color: rgba(255,255,255,0.08);
}

body.dark-mode .event-card-modern {
  background: var(--color-gray-800);
}

body.dark-mode .event-title-modern {
  color: var(--color-gray-100);
}

body.dark-mode .event-description-modern {
  color: var(--color-gray-400);
}

body.dark-mode .search-filter-section {
  background: var(--color-gray-800);
  border-color: var(--color-gray-700);
}

body.dark-mode .search-input {
  background: var(--color-gray-700);
  border-color: var(--color-gray-600);
  color: var(--color-gray-100);
}

body.dark-mode .filter-btn {
  background: var(--color-gray-700);
  border-color: var(--color-gray-600);
  color: var(--color-gray-300);
}