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

:root {
  --color-primary: #2c3e50;
  --color-secondary: #34495e;
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-bg: #f8f9fa;
  --color-white: #ffffff;
  --color-text: #2c3e50;
  --color-text-light: #7f8c8d;
  --color-border: #e1e8ed;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

body {
  font-family: 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
  margin-bottom: 32px;
}

.header-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.header-subtitle {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.judge-info {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 14px;
}

.judge-label {
  color: var(--color-text-light);
  font-weight: 400;
}

.judge-name {
  color: var(--color-primary);
  font-weight: 600;
}

/* Filter Section */
.filter-section {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
  margin-bottom: 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.filter-tabs {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar {
  display: none;
}

.filter-tab {
  padding: 10px 20px;
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-tab:hover {
  background-color: var(--color-bg);
  border-color: var(--color-accent);
}

.filter-tab.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Projects Grid */
.main-content {
  min-height: 60vh;
  padding-bottom: 60px;
}

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

.project-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.project-card.voted::after {
  content: '✓';
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  background-color: var(--color-success);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-bg);
}

.project-image.no-image {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 14px;
}

.project-info {
  padding: 20px;
}

.project-id {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.project-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.project-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 12px;
}

.project-meta-item {
  font-size: 13px;
  color: var(--color-text-light);
}

.project-category {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-bg);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  margin-top: 8px;
}

/* Loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading p {
  margin-top: 16px;
  color: var(--color-text-light);
  font-size: 14px;
}

.error-message {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-danger);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  z-index: 1001;
}

.modal-close {
  position: sticky;
  top: 16px;
  right: 16px;
  float: right;
  width: 40px;
  height: 40px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  font-size: 24px;
  line-height: 1;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background-color: var(--color-danger);
  color: var(--color-white);
  border-color: var(--color-danger);
}

.modal-body {
  padding: 40px;
}

.modal-header {
  margin-bottom: 32px;
}

.modal-project-id {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.modal-project-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.modal-project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

.modal-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-light);
}

.modal-meta-label {
  font-weight: 600;
  color: var(--color-text);
}

.modal-section {
  margin-bottom: 32px;
}

.modal-section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.modal-concept {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  white-space: pre-wrap;
}

.modal-images {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.modal-image:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.modal-image.no-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  color: var(--color-text-light);
  font-size: 14px;
}

.modal-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.modal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: var(--color-bg);
  color: var(--color-accent);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.modal-link:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* Voting Section */
.voting-section {
  background-color: var(--color-bg);
  padding: 32px;
  border-radius: var(--radius-lg);
  margin-top: 32px;
}

.voting-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.score-options {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.score-option {
  display: flex;
  align-items: flex-start;
  padding: 16px;
  background-color: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.score-option:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.score-option.selected {
  border-color: var(--color-accent);
  background-color: rgba(52, 152, 219, 0.05);
}

.score-option input[type="radio"] {
  margin-right: 12px;
  margin-top: 2px;
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.score-label {
  flex: 1;
}

.score-label-title {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
  display: block;
}

.score-label-desc {
  font-size: 13px;
  color: var(--color-text-light);
}

.comment-section {
  margin-bottom: 24px;
}

.comment-label {
  display: block;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.comment-textarea {
  width: 100%;
  min-height: 120px;
  padding: 12px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  resize: vertical;
  transition: border-color 0.2s ease;
}

.comment-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.submit-button {
  width: 100%;
  padding: 14px 24px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.submit-button:hover:not(:disabled) {
  background-color: #2980b9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.submit-button:disabled {
  background-color: var(--color-border);
  color: var(--color-text-light);
  cursor: not-allowed;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  padding: 16px 24px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 500;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 2000;
}

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

.toast.success {
  background-color: var(--color-success);
}

.toast.error {
  background-color: var(--color-danger);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header {
    padding: 24px 0;
  }

  .header-title {
    font-size: 22px;
  }

  .header-subtitle {
    font-size: 14px;
  }

  .filter-tabs {
    gap: 8px;
  }

  .filter-tab {
    padding: 8px 16px;
    font-size: 13px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .modal-content {
    width: 95%;
    max-height: 95vh;
  }

  .modal-body {
    padding: 24px;
  }

  .modal-project-title {
    font-size: 22px;
  }

  .voting-section {
    padding: 24px 16px;
  }

  .toast {
    bottom: 16px;
    right: 16px;
    left: 16px;
  }
}

@media (max-width: 480px) {
  .modal-images {
    grid-template-columns: 1fr;
  }
}