:root {
  --navbar-height: 86px;
  --color-primary: #f8e27f;
  --color-dark: #1a0d00;
  --color-bg: radial-gradient(circle at top left, #120800 0%, #3b1e00 50%, #a67c52 100%);
  --font-main: "Poppins", sans-serif;
  --transition-fast: all 0.3s ease;
  --transition-medium: all 0.5s ease;
  --shadow-glow: 0 0 18px rgba(248, 226, 127, 0.5);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-main);
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

body.no-scroll {
  overflow: hidden;
}

.page-wrapper {
  padding-top: 110px;
  width: 100%;
}

#loader-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #121212;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 215, 0, 0.3);
  border-radius: 50%;
  border-top-color: #ffd700;
  animation: spin 1s ease-in-out infinite;
}

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

#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1030;
  background: rgba(15, 10, 5, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(248, 226, 127, 0.2);
  transition: transform 0.4s ease;
  padding: 10px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-primary);
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  font-size: 1.2rem;
}

.logo img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-glow);
  transition: transform 0.4s ease;
}

.logo:hover img {
  transform: rotate(10deg) scale(1.05);
}

.navbar-toggler {
  border: 1px solid rgba(248, 226, 127, 0.5);
  padding: 5px 10px;
  box-shadow: none !important;
}

.navbar-toggler:focus {
  border-color: var(--color-primary);
}

.nav-link {
  color: var(--color-primary) !important;
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 8px 18px !important;
  border-radius: 8px;
  border: 1.5px solid transparent;
  transition: var(--transition-fast);
}

.nav-link:hover {
  background: rgba(248, 226, 127, 0.1);
  border-color: var(--color-primary);
}

.special-button {
  background: linear-gradient(90deg, #fff8b0, #f8e27f, #fff3a1);
  color: var(--color-dark);
  font-weight: 800;
  font-size: 1.05rem;
  padding: 10px 25px;
  border-radius: 12px;
  box-shadow: var(--shadow-glow);
  transition: var(--transition-fast);
  text-transform: uppercase;
  text-decoration: none;
  display: inline-block;
  white-space: nowrap;
  margin-left: 10px;
}

.special-button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 35px rgba(255, 245, 160, 1);
}

.main-content {
  padding: 20px 1rem 60px 1rem;
}

.main-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-primary);
  font-weight: 800;
  text-shadow: 0 0 20px rgba(248, 226, 127, 0.4);
  margin-bottom: 2rem !important;
}

.summary-card {
  max-width: 800px;
  margin: 0 auto 3.5rem auto;
  padding: 25px 30px;
  background: linear-gradient(135deg, rgba(248, 226, 127, 0.15), rgba(255, 255, 255, 0.05));
  border-radius: 16px;
  border: 1px solid rgba(248, 226, 127, 0.3);
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.3), var(--shadow-glow);
  display: flex;
  align-items: center;
  gap: 25px;
  text-align: left;
}

.summary-icon {
  font-size: 3.5rem;
  color: var(--color-primary);
  text-shadow: var(--shadow-glow);
}

.summary-text {
  font-size: 1.5rem;
  font-weight: 300;
  color: #eee;
}

.summary-number {
  display: block;
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
}

.summary-description {
  margin-left: auto;
  font-size: 0.95rem;
  color: #d0c0a5;
  line-height: 1.6;
  max-width: 250px;
  border-left: 3px solid rgba(248, 226, 127, 0.4);
  padding-left: 20px;
}

.course-card {
  background: rgba(255, 255, 255, 0.07);
  border-radius: 20px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(248, 226, 127, 0.15);
  transition: var(--transition-fast);
  backdrop-filter: blur(5px);
  position: relative;
}

.course-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
  border-color: rgba(248, 226, 127, 0.4);
}

.course-number {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 5rem;
  font-weight: 800;
  color: rgba(248, 226, 127, 0.08);
  z-index: 0;
  transform: rotate(-15deg);
}

.course-card-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.course-card-text {
  color: #e0d0b1;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
  position: relative;
  z-index: 1;
}

.card-buttons-group {
  display: flex;
  gap: 10px;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.card-button, .card-button-secondary {
  flex: 1;
  padding: 12px 15px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  transition: var(--transition-fast);
  cursor: pointer;
  text-align: center;
}

.card-button {
  background: var(--color-primary);
  color: var(--color-dark);
  position: relative;
  padding-right: 35px;
}

.card-button:hover {
  background: #fff8c5;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(248, 226, 127, 0.3);
}

.card-button-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.card-button-secondary:hover {
  background: rgba(248, 226, 127, 0.1);
  transform: translateY(-2px);
  color: var(--color-primary);
}

.card-button::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  transition: transform 0.3s ease;
}

.card-button[aria-expanded="true"]::after {
  transform: translateY(-50%) rotate(-180deg);
}

.subject-list-container {
  margin-top: 20px;
  background: rgba(0,0,0,0.2);
  border-radius: 10px;
  padding: 20px;
  border: 1px solid rgba(248, 226, 127, 0.1);
}

.subject-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.subject-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(248, 226, 127, 0.1);
}

.subject-list li:last-child {
  border-bottom: none;
}

.subject-list li strong {
  color: var(--color-primary);
  font-weight: 600;
  display: block;
}

.subject-list li .docente {
  display: block;
  font-size: 0.9em;
  color: #c0b090;
  padding-left: 15px;
}

#particles {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(248, 226, 127, 0.2);
  animation: float 18s ease-in-out infinite alternate;
}

@keyframes float {
  0% { transform: translate(0, 0); }
  100% { transform: translate(calc(var(--x, 0) * 1px), calc(var(--y, 0) * 1px)); }
}

footer {
  background: #1a0d00;
  padding: 50px 20px 30px;
  text-align: center;
  border-top: 2px solid var(--color-primary);
  margin-top: auto;
}

.footer-cards {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-bottom: 30px;
}

.social-card {
  width: 150px;
  height: 150px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition-fast);
}

.social-card i {
  font-size: 3rem;
  margin-bottom: 10px;
}

.facebook { background: #1877f2; }
.instagram { background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fd5949 45%, #d6249f 60%, #285aeb 90%); }
.campus { background: var(--color-primary); color: var(--color-dark); }

.social-card:hover {
  transform: translateY(-8px) scale(1.03);
  filter: brightness(1.15);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  color: #fff;
}

.copyright {
  font-size: 0.95rem;
  color: #f8e27f;
}

@media (max-width: 991px) {
  .navbar-collapse {
    background: rgba(26, 13, 0, 0.95);
    backdrop-filter: blur(12px);
    border-radius: 12px;
    padding: 20px;
    margin-top: 15px;
    border: 1px solid rgba(248, 226, 127, 0.2);
    position: absolute;
    top: 100%;
    left: 5%;
    width: 90%;
    z-index: 1050;
  }
  .navbar-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
  }
  .nav-link {
    display: block;
    width: 100%;
    font-size: 1.1rem;
  }
  .special-button {
    display: inline-block;
    width: 100%;
    font-size: 1.1rem;
    margin-left: 0;
    margin-top: 10px;
  }
}

@media (max-width: 768px) {
  .summary-card {
    flex-direction: column;
    text-align: center;
    gap: 15px;
  }
  .summary-description {
    margin-left: 0;
    max-width: 100%;
    border-left: none;
    padding-left: 0;
    border-top: 1px solid rgba(248, 226, 127, 0.2);
    padding-top: 15px;
  }
}

@media (max-width: 480px) {
  .card-buttons-group {
    flex-direction: column;
  }
}