@import url('https://fonts.googleapis.com/css2?family=Inter&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Major+Mono+Display&display=swap');

/* Global Variables */
:root {
  --primary-color: #8c2d19;
  --secondary-color: #6a1f10;
  --accent-color: #c14e35;
  --text-color: #333;
  --text-muted: #999;
  --light-text: #f8fafc;
  --background-color: #f8fafc;
  --section-bg: #fff;
  --border-color: #e5e7eb;
  --success-color: #10b981;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --container-width: 1200px;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

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

a:hover {
  color: var(--secondary-color);
}

/* Common Element Styles */
img {
  max-width: 100%;
  height: auto;
}

/* Button Styles */
.button {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}

.primary-button {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.primary-button:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

.accent-button {
  background-color: var(--accent-color);
  color: var(--light-text);
}

.accent-button:hover {
  background-color: transparent;
  border-color: var(--light-text);
  color: var(--light-text);
  transform: translateY(-3px);
}

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

/* Section Common Styles */
.section {
  padding: 5rem 0;
}

.section .container {
  max-width: 60em;
}

.section p {
  margin: 1em auto;
  font-size: 1.1rem;
}

.section-bg-light {
  background-color: var(--background-color);
}

.section-bg-white {
  background-color: var(--section-bg);
}

.section-title {
  font-family: "Major Mono Display";
  word-spacing: -.3em;
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--primary-color);
  margin: 1rem auto 0;
}

.section-subtitle {
  text-align: center;
  margin-bottom: 3rem;
}

/* Card Styles */
.card {
  padding: 1.5rem;
  background-color: var(--section-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Navigation Links */
ul.nav-links {
  list-style: none;
  padding-left: 0;
}

ul.nav-links li {
  margin-bottom: 0.5em;
}

ul.nav-links a {
  text-decoration: none;
  color: var(--primary-color);
  font-size: 1rem;
}

ul.nav-links a i {
  margin-right: 0.5em;
}

/* Header Styles */
.site-header {
  background-color: var(--section-bg);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 2000;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.logo-container {
    display: flex;
}

.logo-container img {
  max-height: 3em;
  width: auto;
}

.main-nav .nav-list {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.main-nav a {
  font-weight: 500;
  color: var(--text-color);
  padding: 0.5rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--primary-color);
  transition: var(--transition);
}

.main-nav a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

.nav-list a.active {
  color: var(--primary-color);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle .bar {
  display: block;
  width: 23px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--text-color);
  transition: var(--transition);
}

.small-logo {
  display: none;
}

/* Hero Section */
.hero {
  background-image: 
    linear-gradient(135deg, #c23622ff, #e8a395ff),    
    url('img/cover.png');
  background-blend-mode: overlay;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--light-text);
  padding: 6rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h2 {
  font-size: 1.5rem;
  margin: 0 4em 1.5rem;
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero .logo {
  font-size: 4em;
}

.logo {
  font-family: "Major Mono Display";
  display: grid;
  grid-auto-columns: auto auto;
  column-gap: .5em;
  line-height: 1em;
  margin: .5em;
  word-spacing: -.3em;
}

.logo img {
  grid-row-start: 1;
  grid-row-end: span 2;
  
  height: 2em;

  justify-self: end;
  align-self: center;

  position: relative;
  bottom: 0.1em;
}

.logo .top {
  grid-row: 1;
  justify-self: start;
  align-self: end;
}

.logo .bottom {
  grid-row: 2;
  align-self: start;
  justify-self: start;
}

.cta-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--light-text);
  padding: 0.8rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  border: 2px solid transparent;
}

.cta-button:hover {
  background-color: transparent;
  border-color: var(--light-text);
  color: var(--light-text);
  transform: translateY(-3px);
}

/* Agenda Section */
.agenda-list {
  display: grid;
  gap: 1.5rem;
}

.agenda-item {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 1.5rem;
}

.agenda-time {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1.1rem;
}

.agenda-details h3 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.agenda-details li {
  list-style: none;
}

.agenda-details li::before {
    content: "•";
    font-weight: 900;
    color: var(--primary-color);
    padding-right: .5em;
}

/* Speakers Section */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 2.5rem;
}

.organization-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.speaker-card {
  text-align: center;
  transition: var(--transition);
  background-color: transparent;
  box-shadow: none;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.speaker-card p {
  margin-top: 0;
}

.speaker-card:hover {
  transform: translateY(-5px);
}

.speaker-image {
  height: 150px;
  width: 150px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 50%;
  margin: 0 auto 1rem;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.speaker-card:hover .speaker-image {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.speaker-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  min-height: 2.4rem; /* Ensures consistent height for all names */
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.speaker-title {
  color: var(--primary-color);
  font-weight: 500;
  font-size: 0.9rem;
  min-height: 1.3rem; /* Ensures consistent height for all affiliations */
}

/* Venue Section */
.venue-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.venue-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.venue-info address {
  font-style: normal;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.venue-map {
  height: 300px;
  background-color: #eee;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.map-placeholder {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  font-weight: 500;
  color: #777;
}

/* Register Section */
.registration-form {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  background-color: var(--section-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"] {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.checkbox-container input {
  cursor: pointer;
}

.submit-button {
  display: block;
  width: 100%;
  padding: 1rem;
  margin-top: 1.5rem;
  background-color: var(--primary-color);
  color: var(--light-text);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.submit-button:hover {
  background-color: var(--secondary-color);
  transform: translateY(-3px);
}

/* Form message styles */
.form-message {
  padding: 10px;
  margin-top: 15px;
  border-radius: 4px;
  text-align: center;
}

.form-message.success {
  background-color: #d1fae5;
  color: #065f46;
}

.form-message.error {
  background-color: #fee2e2;
  color: #b91c1c;
}

/* Footer */
.site-footer {
  background-color: #1a1a1a;
  color: #ccc;
  padding: 3rem 0 2rem;
}

.footer-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 600;
}

.footer-contact a {
  color: var(--accent-color);
  margin-right: 1rem;
}

.footer-contact a:hover {
  color: var(--light-text);
}

.footer-contact i {
  font-size: 1.2rem;
  margin-left: 0.5rem;
}

.footer-copyright {
  text-align: center;
  border-top: 1px solid #333;
  padding-top: 1.5rem;
  font-size: 0.9rem;
  color: #888;
}

/* Animation for page load and elements */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

section {
  animation: fadeIn 1s ease-out;
}

section:nth-child(2) {
  animation-delay: 0.2s;
}

section:nth-child(3) {
  animation-delay: 0.4s;
}

section:nth-child(4) {
  animation-delay: 0.6s;
}

section:nth-child(5) {
  animation-delay: 0.8s;
}

/* Animation classes for JavaScript intersection observer */
.animated {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Menu toggle animation */
.bar.active:nth-child(1) {
  transform-origin: left;
  transform: rotate(45deg);
}

.bar.active:nth-child(2) {
  opacity: 0;
}

.bar.active:nth-child(3) {
  transform-origin: left;
  transform: rotate(-45deg);
}

/* Media Queries */
@media (max-width: 992px) {
  .menu-toggle {
    display: block;
  }

  .hero h2 {
    font-size: 1.5rem;
    margin: 0 2em 1.5rem;
  }

  .hero .logo {
    font-size: 3em;
  }
  
  .main-nav .nav-list {
    display: flex;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--section-bg);
    flex-direction: column;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    max-height: 0;
    transition: var(--transition);
    gap: 0;
  }
  
  .nav-list.active {
    align-items: center;
    max-height: 40em;
  }
  
  .nav-list li {
    width: 100%;
    text-align: center;
  }
  
  .nav-list a {
    display: block;
    padding: 1em;
  }
  
  .agenda-item {
    grid-template-columns: 1fr;
  }
  
  .footer-info {
    flex-direction: column;
    gap: 1.5rem;
  }

  .main-nav a::after {
    content: '';
    position: absolute;
    width: .5em;
    height: .5em;
    bottom: 1.5em;
    left: 1em;
    border-radius: 50%;
    background-color: var(--primary-color);
    transition: var(--transition);
    opacity: 0;
  }

  .main-nav a:hover::after {
    opacity: .5;
    width: .5em;
  }

  .nav-list a.active::after {
    opacity: 1;
    width: .5em;
  }

  .venue-details {
    grid-template-columns: 1fr;
  }
  
  .checkbox-group {
    grid-template-columns: 1fr;
  }
  
  .speakers-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    justify-content: center;
  }

}

@media (max-width: 768px) {
  .hero .logo {
    font-size: 2.5em;
  }

  .organization-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 448px) {
  .hero .logo {
    font-size: 2em;
  }
 
  .small-logo {
    display: block;
  }

  .normal-logo {
    display: none;
  }
}