:root {
  --dark-blue: #555b6e;
  --teal: #89b0ae;
  --light-teal: #bee3db;
  --cream: #faf9f9;
  --peach: #ffd6ba;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-blue);
  background: linear-gradient(135deg, var(--cream) 0%, var(--light-teal) 100%);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--teal) 0%, var(--dark-blue) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
  border-radius: 0 0 50px 50px;
  margin-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  animation: float 6s ease-in-out infinite;
}

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

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

.hero-title {
  font-size: 3rem;
  margin-bottom: 20px;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 40px;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 15px 30px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--peach);
  color: var(--dark-blue);
}

.btn-primary:hover {
  background: #ffcaa3;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--dark-blue);
  transform: translateY(-2px);
}

.btn-submit {
  background: var(--teal);
  color: white;
  width: 100%;
  margin-top: 20px;
}

.btn-submit:hover {
  background: #7a9e9c;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Sections */
.section {
  margin-bottom: 60px;
}

.section-content {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--light-teal);
}

.section h2 {
  font-size: 2.5rem;
  color: var(--dark-blue);
  margin-bottom: 30px;
  text-align: center;
  position: relative;
}

.section h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background: var(--teal);
  margin: 15px auto;
  border-radius: 2px;
}

/* How to Join */
.join-card {
  background: linear-gradient(135deg, var(--light-teal), var(--cream));
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  font-size: 1.1rem;
}

.highlight {
  background: var(--peach);
  color: var(--dark-blue);
  padding: 2px 8px;
  border-radius: 5px;
  font-weight: bold;
}

/* Prizes */
.prize-note {
  text-align: center;
  font-style: italic;
  margin-bottom: 30px;
  color: var(--dark-blue);
  opacity: 0.8;
}

.prizes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.prize-card {
  background: white;
  padding: 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 3px solid;
}

.prize-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.first-place {
  border-color: #ffd700;
  background: linear-gradient(135deg, #fff9c4, white);
}

.second-place {
  border-color: #c0c0c0;
  background: linear-gradient(135deg, #f5f5f5, white);
}

.third-place {
  border-color: #cd7f32;
  background: linear-gradient(135deg, #fff3e0, white);
}

.medal {
  font-size: 3rem;
  margin-bottom: 15px;
}

.prize-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--dark-blue);
}

.amount {
  font-size: 2rem;
  font-weight: bold;
  color: var(--teal);
}

/* Design Format */
.format-card {
  background: var(--cream);
  padding: 30px;
  border-radius: 15px;
}

.pages-list {
  list-style: none;
  margin: 25px 0;
}

.pages-list li {
  background: white;
  padding: 15px 20px;
  margin-bottom: 15px;
  border-radius: 10px;
  border-left: 5px solid var(--teal);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.important-note {
  background: var(--peach);
  padding: 20px;
  border-radius: 10px;
  margin: 25px 0;
  text-align: center;
  border: 2px solid #ffcaa3;
}

/* Reference Image Section */
.reference-section {
  background: white;
  padding: 30px;
  border-radius: 15px;
  margin-top: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.reference-section h3 {
  color: var(--dark-blue);
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.image-container {
  background: var(--light-teal);
  border-radius: 10px;
  margin: 20px 0;
  overflow: hidden;
  box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
}

.image-container img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.image-note {
  background: rgba(137, 176, 174, 0.1);
  padding: 15px;
  border-radius: 8px;
  font-style: italic;
  border-left: 4px solid var(--teal);
  margin-top: 15px;
}

/* Judging Criteria */
.criteria-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.criteria-item {
  background: linear-gradient(135deg, var(--light-teal), white);
  padding: 30px 20px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.criteria-item:hover {
  transform: translateY(-5px);
}

.criteria-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.criteria-item h3 {
  color: var(--dark-blue);
  font-size: 1.1rem;
}

/* Submission */
.submission-section .section-content {
  background: linear-gradient(135deg, var(--dark-blue), var(--teal));
  color: white;
}

.submission-section h2 {
  color: white;
}

.submission-section h2::after {
  background: var(--peach);
}

.submission-card {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 15px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.submission-details p {
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.deadline {
  background: var(--peach);
  color: var(--dark-blue);
  padding: 5px 10px;
  border-radius: 5px;
  font-weight: bold;
}

.no-late {
  color: var(--peach);
  font-size: 1.2rem;
}

.tip-card {
  background: rgba(255, 255, 255, 0.15);
  padding: 25px;
  border-radius: 15px;
  margin-top: 30px;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.tip-card h3 {
  margin-bottom: 15px;
  color: var(--peach);
}

/* Footer */
.footer {
  background: var(--dark-blue);
  color: white;
  text-align: center;
  padding: 30px 0;
  border-radius: 50px 50px 0 0;
  margin-top: 60px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .hero {
    padding: 60px 0;
    margin-bottom: 40px;
    border-radius: 0 0 30px 30px;
  }

  .hero-title {
    font-size: 2.2rem;
    margin-bottom: 15px;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 30px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .btn {
    width: 90%;
    max-width: 300px;
    padding: 12px 25px;
    font-size: 0.95rem;
  }

  .section {
    margin-bottom: 40px;
  }

  .section-content {
    padding: 25px 20px;
    border-radius: 15px;
  }

  .section h2 {
    font-size: 2rem;
    margin-bottom: 25px;
  }

  .section h2::after {
    width: 60px;
    height: 3px;
  }

  .prizes-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .prize-card {
    padding: 25px 20px;
  }

  .amount {
    font-size: 1.8rem;
  }

  .criteria-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .criteria-item {
    padding: 25px 15px;
  }

  .criteria-icon {
    font-size: 2rem;
  }

  .join-card,
  .format-card {
    padding: 25px 20px;
    border-radius: 12px;
  }

  .pages-list li {
    padding: 12px 15px;
    font-size: 0.95rem;
  }

  .important-note {
    padding: 15px;
    margin: 20px 0;
  }

  .reference-section {
    padding: 25px 20px;
  }

  .reference-section h3 {
    font-size: 1.2rem;
  }

  .image-container {
    margin: 15px 0;
  }

  .image-note {
    padding: 12px;
    font-size: 0.9rem;
  }

  .submission-card {
    padding: 25px 20px;
  }

  .submission-details p {
    font-size: 1rem;
    margin-bottom: 12px;
  }

  .tip-card {
    padding: 20px 15px;
  }

  .footer {
    padding: 25px 0;
    border-radius: 30px 30px 0 0;
    margin-top: 40px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 10px;
  }

  .hero {
    padding: 50px 0;
    margin-bottom: 30px;
  }

  .hero-title {
    font-size: 1.8rem;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 0.9rem;
  }

  .section-content {
    padding: 20px 15px;
    border-radius: 12px;
  }

  .section h2 {
    font-size: 1.7rem;
  }

  .btn {
    width: 100%;
    padding: 14px 20px;
    font-size: 0.9rem;
  }

  .prize-card {
    padding: 20px 15px;
  }

  .medal {
    font-size: 2.5rem;
  }

  .amount {
    font-size: 1.6rem;
  }

  .criteria-item {
    padding: 20px 12px;
  }

  .criteria-item h3 {
    font-size: 1rem;
  }

  .join-card,
  .format-card {
    padding: 20px 15px;
  }

  .pages-list li {
    padding: 10px 12px;
    font-size: 0.9rem;
    margin-bottom: 12px;
  }

  .important-note {
    padding: 12px;
    font-size: 0.9rem;
  }

  .highlight {
    padding: 2px 6px;
    font-size: 0.85rem;
  }

  .reference-section {
    padding: 20px 15px;
  }

  .reference-section h3 {
    font-size: 1.1rem;
  }

  .reference-section p {
    font-size: 0.9rem;
  }

  .image-note {
    padding: 10px;
    font-size: 0.85rem;
  }

  .submission-card {
    padding: 20px 15px;
  }

  .submission-details p {
    font-size: 0.9rem;
  }

  .deadline {
    padding: 3px 8px;
    font-size: 0.85rem;
  }

  .no-late {
    font-size: 1.1rem;
  }

  .tip-card {
    padding: 15px 12px;
  }

  .tip-card h3 {
    font-size: 1rem;
  }

  .tip-card p {
    font-size: 0.9rem;
  }
}

/* Extra small devices (very small phones) */
@media (max-width: 360px) {
  .hero-title {
    font-size: 1.6rem;
  }

  .section h2 {
    font-size: 1.5rem;
  }

  .section-content {
    padding: 15px 12px;
  }

  .btn {
    padding: 12px 15px;
    font-size: 0.85rem;
  }

  .prize-card {
    padding: 15px 10px;
  }

  .criteria-item {
    padding: 15px 10px;
  }

  .join-card,
  .format-card,
  .reference-section {
    padding: 15px 12px;
  }

  .submission-card,
  .tip-card {
    padding: 15px 10px;
  }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 48px;
    padding: 15px 25px;
  }

  .criteria-item,
  .prize-card {
    padding: 25px 20px;
  }

  .image-container img {
    cursor: pointer;
  }
}

/* Landscape orientation on small devices */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding: 40px 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .section-content {
    padding: 20px;
  }
}