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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  color: #2c3e50;
  line-height: 1.6;
}

/* Header */
header {
  background: radial-gradient(circle, hsl(151, 100%, 95%) 0%, hsl(160, 64%, 14%) 100%);
  border-bottom: 2px solid #27ae60;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
}

.logo {
  width: 80px;
  border-radius: 12px;
  margin-bottom: 15px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(39, 174, 96, 0.3);
}

header h1 {
  font-size: 2.2rem;
  color: #2c3e50;
  margin-bottom: 5px;
  font-weight: 700;
}

header p {
  font-size: 1rem;
  color: #3a4646;
  font-weight: 500;
}

/* Navigation */
nav {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

nav a {
  display: inline-block;
  text-decoration: none;
  color: #000000;
  padding: 12px 20px;
  border-radius: 25px;
  border: 2px solid transparent; /* prevent layout shift */
  font-weight: 600;
  position: relative;
  overflow: hidden;
  transition: background 0.3s ease, transform 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

nav a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(39, 174, 96, 0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
  z-index: 0;
}

nav a:hover::before {
  transform: translateX(100%);
}

nav a:hover {
  background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
  color: white;
  border-color: #27ae60;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(39, 174, 96, 0.4);
}

nav a span {
  position: relative;
  z-index: 1;
}

/* Sections */
main {
  padding: 40px 20px;
}

section {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  max-width: 800px;
  margin: 0 auto 40px;
  padding: 35px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

section h2 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 20px;
  text-align: center;
  font-weight: 700;
  position: relative;
}

section h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #27ae60, #229954);
  border-radius: 2px;
}

section p {
  font-size: 1rem;
  color: #34495e;
  text-align: center;
  line-height: 1.8;
}

/* Team */
.team .member {
  margin-top: 20px;
  padding: 20px;
  background-color: #f4f4f4;
  border-radius: 10px;
  text-align: center;
}

.team h3 {
  font-size: 1.3rem;
  color: #2f4f4f;
}

.team p {
  color: #7e9293;
}

.team a {
  display: inline-block;
  margin-top: 10px;
  text-decoration: none;
  color: #2f4f4f;
  border: 1px solid #2f4f4f;
  padding: 8px 16px;
  border-radius: 20px;
  transition: 0.3s;
}

.team a:hover {
  background-color: #2f4f4f;
  color: white;
}

.member-photo {
  width: 75px;
  height: 75px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 10px;
}

/* Form */
.form-section form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.form-section input,
.form-section textarea {
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  background-color: #fff;
  font-size: 1rem;
}

.form-section input:focus,
.form-section textarea:focus {
  outline: none;
  border-color: #2f4f4f;
}

.form-section button {
  background-color: #2f4f4f;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 25px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s;
}

.form-section button:hover {
  background-color: #1e3636;
}

/* Events */
.event-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  padding: 30px;
  border-radius: 20px;
  margin-top: 20px;
  text-align: center;
  border: 2px solid #27ae60;
  box-shadow: 0 8px 25px rgba(39, 174, 96, 0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.event-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(39, 174, 96, 0.05), transparent);
  transition: left 0.6s;
}

.event-card:hover::before {
  left: 100%;
}

.event-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(39, 174, 96, 0.25);
  border-color: #229954;
}

.event-card h3 {
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 700;
  font-size: 1.4rem;
}

.event-card p {
  color: #34495e;
  margin-bottom: 25px;
  line-height: 1.8;
}

.register-btn {
  background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
  color: white;
  border: none;
  padding: 15px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
}

.register-btn::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 0.5s;
}

.register-btn:hover::before {
  left: 100%;
}

.register-btn:hover {
  background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(39, 174, 96, 0.5);
}

/* Event Header */
.event-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
}

.event-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

/* Participating Colleges */
.participating-colleges {
  margin: 25px 0;
  text-align: center;
}

.participating-colleges h4 {
  color: #2f4f4f;
  font-size: 1.2rem;
  margin-bottom: 15px;
}

.college-logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 15px;
}

.college-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 15px;
  border: 2px solid transparent;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.college-logo::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(39, 174, 96, 0.1), transparent);
  transition: left 0.6s;
}

.college-logo:hover::before {
  left: 100%;
}

.college-logo:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 30px rgba(39, 174, 96, 0.2);
  border-color: #27ae60;
}

.college-logo a {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  height: 100%;
}

.college-logo img {
  width: 100px;
  height: 75px;
  object-fit: contain;
  border-radius: 12px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  padding: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
}

.college-logo:hover img {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(39, 174, 96, 0.2);
  border-color: #27ae60;
}

.college-logo span {
  font-size: 0.9rem;
  font-weight: 500;
  color: #2f4f4f;
  text-align: center;
}

/* Special styling for Many More section */
.college-logo:last-child {
  grid-column: 2 / 4;
  justify-self: center;
}

.college-logo:last-child img {
  width: 140px;
  height: 105px;
}

.college-logo:last-child span {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Footer */
footer {
  background-color: #292b2b;
  border-top: 1px solid #ddd;
  text-align: center;
  padding: 20px;
}

footer p {
  color: #ffffff;
  font-size: 0.95rem;
  margin-bottom: 10px;
}

footer a {
  color: #6affff;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 15px;
  transition: 0.3s;
}

footer a:hover {
  background-color: #2f4f4f;
  color: white;
}

.about-details {
  list-style: none;
  margin-top: 20px;
  padding: 0;
  color: #444;
  font-size: 1rem;
  line-height: 1.8;
}

.about-details li {
  margin-bottom: 8px;
}

.college-logos-horizontal {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 15px 10px;
  scroll-behavior: smooth;

  /* Show thin scrollbar */
  scrollbar-width: thin;         /* Firefox */
  scrollbar-color: #27ae60 #f1f1f1; /* thumb + track colors */
}

/* Chrome, Edge, Safari */
.college-logos-horizontal::-webkit-scrollbar {
  height: 6px; /* thin scrollbar */
}

.college-logos-horizontal::-webkit-scrollbar-track {
  background: #f1f1f1; /* light track */
  border-radius: 10px;
}

.college-logos-horizontal::-webkit-scrollbar-thumb {
  background: #27ae60; /* green thumb */
  border-radius: 10px;
}

.college-logos-horizontal::-webkit-scrollbar-thumb:hover {
  background: #229954; /* darker on hover */
}

.college-logo {
  flex: 0 0 auto;
  width: 220px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 15px;
  border: 2px solid transparent;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}