/* ====================================================
   CSE SYMPOSIUM 2025 — MASTER STYLESHEET
   ==================================================== */

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

:root {
  --bg-base: #05060f;
  --bg-surface: #0d0e1e;
  --bg-card: #12142a;
  --bg-card-hover: #171938;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);

  --accent-blue: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-pink: #ec4899;

  --grad-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --grad-card: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.08) 100%);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.25);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 72px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-cyan);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- GRADIENT TEXT ---------- */
.gradient-text {
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====================================================
   NAVBAR
   ==================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(5, 6, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  font-size: 22px;
  filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.7));
}

.brand-text {
  font-size: 1rem;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.brand-text strong {
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.btn-nav {
  background: var(--grad-main) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
  transition: transform var(--transition), box-shadow var(--transition) !important;
}

.btn-nav:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.6) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.2rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.hamburger:hover {
  background: rgba(255, 255, 255, 0.06);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px;
  background: rgba(5, 6, 15, 0.95);
  border-bottom: 1px solid var(--border);
}

.mobile-menu a {
  color: var(--text-secondary);
  padding: 10px 0;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu.open {
  display: flex;
}

/* ====================================================
   HERO
   ==================================================== */
.hero {
  min-height: 100vh;
  padding: calc(var(--nav-height) + 80px) 24px 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.hero-bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: rgba(99, 102, 241, 0.15);
  top: -100px;
  left: -200px;
  animation: floatGlow 8s ease-in-out infinite;
}

.glow-2 {
  width: 400px;
  height: 400px;
  background: rgba(139, 92, 246, 0.12);
  bottom: -50px;
  right: -100px;
  animation: floatGlow 10s ease-in-out infinite reverse;
}

.glow-3 {
  width: 300px;
  height: 300px;
  background: rgba(6, 182, 212, 0.08);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: floatGlow 12s ease-in-out infinite;
}

@keyframes floatGlow {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(20px, -20px) scale(1.05);
  }
}

.hero-content {
  flex: 1;
  min-width: 300px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-blue);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease both;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 20px;
  animation: fadeInUp 0.7s 0.1s ease both;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.7s 0.2s ease both;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
  animation: fadeInUp 0.7s 0.3s ease both;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 14px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: fadeInUp 0.7s 0.4s ease both;
}

/* Shared Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--grad-main);
  color: #fff !important;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.5);
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.7);
  color: #fff !important;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: 1px solid var(--border-hover);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  width: 340px;
  height: 340px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orb {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: conic-gradient(from 180deg, #6366f1, #8b5cf6, #06b6d4, #10b981, #6366f1);
  opacity: 0.15;
  filter: blur(30px);
  animation: spinSlow 20s linear infinite;
}

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

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: rgba(13, 14, 30, 0.9);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}

.fc-icon {
  font-size: 1.2rem;
}

.card-1 {
  top: 0;
  left: -20px;
  animation: float 4s ease-in-out infinite;
}

.card-2 {
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  animation: float 5s ease-in-out infinite 1s;
}

.card-3 {
  bottom: 20px;
  left: 10px;
  animation: float 4.5s ease-in-out infinite 0.5s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.card-2 {
  animation: float2 5s ease-in-out infinite 1s;
}

@keyframes float2 {

  0%,
  100% {
    transform: translateY(-50%);
  }

  50% {
    transform: translateY(calc(-50% - 10px));
  }
}

/* ====================================================
   EVENTS SECTION
   ==================================================== */
.events-section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.event-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  opacity: 0;
  transition: opacity var(--transition);
}

.event-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.event-card.featured {
  border-color: rgba(99, 102, 241, 0.4);
  background: linear-gradient(135deg, #12142a 0%, #1a1040 100%);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.2);
}

.featured-ribbon {
  position: absolute;
  top: 20px;
  right: -32px;
  background: var(--grad-main);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 5px 40px;
  transform: rotate(45deg);
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.5);
}

.event-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.event-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-blue {
  background: rgba(99, 102, 241, 0.15);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.icon-purple {
  background: rgba(139, 92, 246, 0.15);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.icon-green {
  background: rgba(16, 185, 129, 0.15);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.event-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-secondary);
}

.event-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.event-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.event-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.event-details li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.event-details li span {
  font-size: 1rem;
}

.event-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.price-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.price-amount {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-amount small {
  font-size: 0.75rem;
  font-weight: 500;
}

.btn-event {
  padding: 10px 22px;
  background: var(--grad-main);
  color: #fff !important;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50px;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-event:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.6);
  color: #fff !important;
}

/* ====================================================
   ABOUT SECTION
   ==================================================== */
.about-section {
  padding: 100px 0;
  background: var(--bg-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text .section-tag {
  margin-bottom: 12px;
}

.about-text h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.stats-row {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 2rem;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  transition: all var(--transition);
}

.about-feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.afc-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.about-feature-card strong {
  font-size: 0.9rem;
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}

.about-feature-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* ====================================================
   CTA SECTION
   ==================================================== */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  position: relative;
  text-align: center;
  padding: 70px 40px;
  background: var(--bg-card);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.15);
  border-radius: 50%;
  filter: blur(60px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
}

.cta-box p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
}

/* ====================================================
   FOOTER
   ==================================================== */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 14px;
  margin-bottom: 12px;
}

.footer-contact a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.footer-contact a:hover {
  color: var(--accent-blue);
}

.footer-links h4,
.footer-contact-block h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links ul li a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-links ul li a:hover {
  color: var(--text-primary);
}

.footer-contact-block p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-contact-block a {
  color: var(--text-secondary);
}

.footer-contact-block a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-legal-links a {
  color: var(--text-secondary);
}

.footer-legal-links a:hover {
  color: var(--accent-blue);
}

/* ====================================================
   INNER PAGE — PAGE HERO
   ==================================================== */
.inner-page {}

.page-hero {
  padding: calc(var(--nav-height) + 60px) 24px 60px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.page-hero-content h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -1.5px;
  margin: 12px 0 10px;
}

.page-hero-content p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ====================================================
   REGISTRATION FORM
   ==================================================== */
.form-section {
  padding: 60px 0 100px;
}

.form-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  align-items: start;
}

.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.required {
  color: #f87171;
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: all var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
  background: #0a0b1a;
}

.form-group input.error {
  border-color: #f87171;
}

.field-error {
  font-size: 0.78rem;
  color: #f87171;
  min-height: 18px;
  display: block;
}

/* Phone input */
.phone-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}

.phone-input-wrap:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.phone-prefix {
  padding: 14px 14px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  flex-shrink: 0;
}

.phone-input-wrap input {
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  background: transparent !important;
  flex: 1;
}

.phone-input-wrap input:focus {
  border: none !important;
  box-shadow: none !important;
}

/* Select wrap */
.select-wrap {
  position: relative;
}

.select-wrap select {
  padding-right: 40px;
  cursor: pointer;
}

.select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.form-group select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* Form Row */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Amount Preview */
.amount-preview {
  margin-bottom: 24px;
  animation: fadeInUp 0.4s ease both;
}

.amount-preview-inner {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.08) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.amount-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 6px 0;
}

.amount-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

.total-row {
  color: var(--text-primary);
}

.total-amount {
  font-size: 1.5rem;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Sidebar */
.form-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: calc(var(--nav-height) + 20px);
}

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.sidebar-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.sidebar-fee-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-fee-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-fee-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-fee-list li strong {
  color: var(--text-primary);
}

.sidebar-info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-info-list li {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.secure-card {
  text-align: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.08) 100%);
  border-color: rgba(99, 102, 241, 0.25);
}

.secure-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.secure-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

/* ====================================================
   PAYMENT PAGE
   ==================================================== */
.payment-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  align-items: start;
}

.order-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: sticky;
  top: calc(var(--nav-height) + 20px);
}

.order-summary-header {
  padding: 20px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(99, 102, 241, 0.06);
}

.order-summary-body {
  padding: 24px;
}

.order-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.order-row:last-of-type {
  border-bottom: none;
}

.order-row strong {
  color: var(--text-primary);
}

.order-label {
  font-weight: 500;
}

.order-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0 0;
  margin-top: 8px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.order-total-amount {
  font-size: 1.6rem;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.order-secure-badge {
  padding: 14px 24px;
  background: rgba(16, 185, 129, 0.06);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Payment Card */
.payment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.payment-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.payment-card-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
}

.cashfree-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cashfree-badge strong {
  color: var(--accent-blue);
}

/* Payment Status Overlay */
.payment-status {
  text-align: center;
  padding: 40px 21px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

#paymentStatusText {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Pay button area */
.pay-amount-display {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.pay-amount-display strong {
  font-size: 2rem;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 4px;
}

.btn-pay {
  font-size: 1.1rem !important;
  padding: 18px 28px !important;
  letter-spacing: 0.3px;
  border-radius: var(--radius-md) !important;
}

.pay-terms {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.5;
}

.pay-terms a {
  color: var(--accent-blue);
}

.payment-error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.875rem;
  color: #fca5a5;
  margin-top: 16px;
}

.back-link {
  display: inline-block;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--text-primary);
}

/* Cashfree Drop UI override styles */
#cashfreeDropContainer {
  min-height: 0;
}

/* ====================================================
   SUCCESS PAGE
   ==================================================== */
.success-section {
  min-height: calc(100vh - var(--nav-height));
  padding: calc(var(--nav-height) + 60px) 24px 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.success-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  max-width: 640px;
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.4), 0 0 40px rgba(16, 185, 129, 0.1);
  animation: fadeInUp 0.7s ease both;
}

.success-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}

.success-circle {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 2px solid rgba(16, 185, 129, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 40px rgba(16, 185, 129, 0.3);
}

/* SVG checkmark animation */
.checkmark {
  width: 48px;
  height: 48px;
}

.checkmark-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  stroke-width: 2;
  stroke: #10b981;
  animation: strokeCircle 0.6s cubic-bezier(0.65, 0, 0.45, 1) 0.3s forwards;
}

.checkmark-check {
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  stroke-width: 2.5;
  stroke: #10b981;
  animation: strokeCheck 0.4s cubic-bezier(0.65, 0, 0.45, 1) 0.9s forwards;
}

@keyframes strokeCircle {
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes strokeCheck {
  to {
    stroke-dashoffset: 0;
  }
}

.success-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.success-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 28px;
}

.confirmation-details {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 28px;
  text-align: left;
}

.confirm-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.confirm-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.confirm-label {
  color: var(--text-muted);
}

.confirm-value {
  color: var(--text-primary);
  font-weight: 600;
}

.success-note {
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-align: left;
  margin-bottom: 28px;
}

.success-note p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.success-note p:last-child {
  margin-bottom: 0;
}

.success-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ====================================================
   LEGAL PAGES
   ==================================================== */
.legal-section {
  padding: 60px 0 100px;
}

.legal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  max-width: 800px;
}

.legal-intro {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.legal-card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal-card h2:first-of-type {
  margin-top: 0;
}

.legal-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
}

.legal-card ul {
  padding-left: 20px;
  margin-bottom: 12px;
}

.legal-card ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.legal-alert {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 28px;
}

.legal-alert.warning {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.25);
  color: #fbbf24;
}

/* ====================================================
   ANIMATIONS
   ==================================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

/* ====================================================
   RESPONSIVE
   ==================================================== */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .form-layout {
    grid-template-columns: 1fr;
  }

  .form-sidebar {
    position: static;
  }

  .payment-layout {
    grid-template-columns: 1fr;
  }

  .order-summary-card {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--nav-height) + 40px);
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-visual {
    width: 280px;
    height: 280px;
  }

  .events-grid {
    grid-template-columns: 1fr;
  }

  .about-cards {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .form-card {
    padding: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .payment-card {
    padding: 24px;
  }

  .payment-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .success-card {
    padding: 36px 24px;
  }

  .legal-card {
    padding: 28px 20px;
  }

  .cta-box {
    padding: 48px 24px;
  }

  .page-hero {
    padding-bottom: 40px;
  }
}

@media (max-width: 480px) {
  .floating-card {
    display: none;
  }

  .hero-visual {
    display: none;
  }
}