/* ========================
   VARIÁVEIS CSS (Custom Properties)
   ======================== */

:root {
  /* Cores */
  --color-primary: #7b1e3a;
  --color-primary-light: #9d2448;
  --color-primary-darker: #5a1629;
  --color-text: #333;
  --color-text-light: #666;
  --color-text-lighter: #999;
  --color-bg: #f8f8f8;
  --color-bg-white: white;
  --color-border: #e0e0e0;
  --color-border-light: #e6e6e6;
  --color-gold: #ffd700;
  --color-gold-light: #ffed4e;
  --color-silver: #c0c0c0;
  --color-silver-light: #e5e5e5;
  --color-bronze: #cd7f32;
  --color-bronze-light: #daa520;
  --color-accent: #ffc107;

  /* Tipografia */
  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 600;
  --font-weight-bold: 700;

  /* Espaçamento */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 2.5rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Dimensões Grid */
  --course-columns-desktop: 4;
  --course-columns-tablet: 3;
  --course-columns-mobile: 2;
  --course-img-height-desktop: 180px;
  --course-img-height-tablet: 140px;
  --course-img-height-mobile: 120px;

  /* Border Radius */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  --border-radius-full: 25px;

  /* Sombras */
  --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 15px 40px rgba(0, 0, 0, 0.2);
  --shadow-primary: 0 4px 15px rgba(123, 30, 58, 0.3);
  --shadow-primary-lg: 0 15px 40px rgba(123, 30, 58, 0.3);

  /* Transições */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-smooth: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-easing: ease-in-out;
}

/* ========================
   RESET BÁSICO
   ======================== */

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================
   CONTAINER GERAL
   ======================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

/* ========================
   CABEÇALHO DO DASHBOARD
   ======================== */

.course-dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-primary) 100%);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 30px rgba(123, 30, 58, 0.15);
  position: relative;
  overflow: hidden;
}

.course-dashboard-header::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  animation: headerShimmer 8s ease-in-out infinite;
}

@keyframes headerShimmer {
  0%, 100% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(180deg) scale(1.1);
  }
}

.dashboard-title-group {
  position: relative;
  z-index: 1;
}

.page-title {
  font-size: 2.2rem;
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--spacing-xs);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.dashboard-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: var(--font-weight-normal);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.course-dashboard-header .btn-primary {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-normal);
}

.course-dashboard-header .btn-primary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* ========================
   SEÇÃO CURSOS TOP RATED
   ======================== */

.top-rated-section {
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-primary) 100%);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-primary-lg);
  position: relative;
  overflow: hidden;
}

.top-rated-section::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: shimmer 6s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(180deg);
  }
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2xl);
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.top-rated-courses {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  justify-items: center;
  position: relative;
  z-index: 1;
}

.top-rated-course {
  position: relative;
  max-width: 320px;
  width: 100%;
  animation: fadeInUp 0.6s ease-out forwards;
  opacity: 0;
}

.top-rated-course:nth-child(1) { animation-delay: 0.1s; }
.top-rated-course:nth-child(2) { animation-delay: 0.3s; }
.top-rated-course:nth-child(3) { animation-delay: 0.5s; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Crown Styling */
.crown-container {
  text-align: center;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.crown {
  font-size: 3.5rem;
  display: block;
  margin-bottom: var(--spacing-sm);
  animation: bounce 2s ease-in-out infinite;
  transition: transform var(--transition-normal);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.crown:hover {
  transform: scale(1.1) rotate(10deg);
}

.crown.gold {
  filter: hue-rotate(45deg) brightness(1.3) drop-shadow(0 0 10px gold);
}

.crown.silver {
  filter: grayscale(0.2) brightness(1.2) drop-shadow(0 0 8px silver);
}

.crown.bronze {
  filter: hue-rotate(25deg) brightness(0.95) drop-shadow(0 0 6px var(--color-bronze));
}

/* Position Labels */
.position-label {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-bold);
  font-size: 1rem;
  box-shadow: var(--shadow-primary);
  transition: transform var(--transition-normal);
}

.position-label:hover {
  transform: scale(1.05);
}

.position-1 .position-label {
  background: linear-gradient(45deg, var(--color-gold), var(--color-gold-light));
  color: var(--color-text);
  border: 2px solid #ffa500;
}

.position-2 .position-label {
  background: linear-gradient(45deg, var(--color-silver), var(--color-silver-light));
  color: var(--color-text);
  border: 2px solid #a0a0a0;
}

.position-3 .position-label {
  background: linear-gradient(45deg, var(--color-bronze), var(--color-bronze-light));
  color: white;
  border: 2px solid #b8860b;
}

/* Course Card */
.course-card {
  background: var(--color-bg-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: var(--transition-smooth);
  border: 3px solid transparent;
  position: relative;
}

.position-1 .course-card {
  border-color: var(--color-gold);
  box-shadow: 0 15px 40px rgba(255, 215, 0, 0.3);
}

.position-2 .course-card {
  border-color: var(--color-silver);
  box-shadow: 0 12px 35px rgba(192, 192, 192, 0.25);
}

.position-3 .course-card {
  border-color: var(--color-bronze);
  box-shadow: 0 10px 30px rgba(205, 127, 50, 0.2);
}

.course-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.course-card .course-img {
  width: 100%;
  height: var(--course-img-height-desktop);
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.course-card:hover .course-img {
  transform: scale(1.05);
}

.course-info {
  padding: var(--spacing-lg);
}

.course-title {
  margin-bottom: var(--spacing-sm);
}

.course-title a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: var(--font-weight-bold);
  transition: color var(--transition-normal);
  display: block;
  line-height: 1.3;
}

.course-title a:hover {
  color: var(--color-primary);
}

.course-description {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
  font-size: 0.95rem;
}

.course-stats {
  margin-bottom: var(--spacing-md);
}

.rating {
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.stars {
  color: var(--color-accent);
  font-size: 1.1rem;
  letter-spacing: 2px;
}

.rating-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: var(--font-weight-medium);
}

/* ========================
   FORMULÁRIO DE BUSCA
   ======================== */

.search-form {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-2xl) auto;
  max-width: 600px;
  padding: var(--spacing-md);
  background: var(--color-bg-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.search-form:hover {
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.search-input {
  flex: 1;
  padding: 0.8rem 1.2rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  background-color: #fafafa;
  transition: all var(--transition-normal);
  font-family: var(--font-family);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-bg-white);
  box-shadow: 0 0 0 3px rgba(123, 30, 58, 0.1);
}

.search-input::placeholder {
  color: var(--color-text-lighter);
  font-style: italic;
}

/* ========================
   BOTÕES
   ======================== */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius-md);
  font-size: 0.95rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  font-family: var(--font-family);
}

.btn-primary {
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: white;
  box-shadow: var(--shadow-primary);
}

.btn-primary::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;
}

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

.btn-primary:hover {
  background: linear-gradient(45deg, var(--color-primary-light), var(--color-primary));
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(123, 30, 58, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: #f5f5f5;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

/* ========================
   LISTA DE CURSOS
   ======================== */

.course-list {
  display: grid;
  grid-template-columns: repeat(var(--course-columns-desktop), 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding: 0;
  list-style: none;
}

.course-item {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  position: relative;
}

.course-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
  z-index: 1;
}

.course-item:hover::before {
  transform: scaleX(1);
}

.course-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.course-img {
  width: 100%;
  height: var(--course-img-height-desktop);
  object-fit: cover;
  transition: transform var(--transition-normal);
  position: relative;
  display: block;
}

.course-item:hover .course-img {
  transform: scale(1.05);
}

/* Conteúdo do curso */
.course-item .content {
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 0.8rem;
}

.course-item .content a {
  text-decoration: none;
  transition: color var(--transition-normal);
}

.course-item .content strong {
  font-size: 1.1rem;
  color: var(--color-text);
  line-height: 1.3;
  font-weight: var(--font-weight-bold);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-item .content a:hover strong {
  color: var(--color-primary);
}

.course-item .content p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  flex-grow: 1;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Estatísticas do curso */
.stats {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 0.8rem 0;
}

.participants {
  font-size: 0.8rem;
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  padding: 0.4rem 0.6rem;
  background: linear-gradient(135deg, rgba(123, 30, 58, 0.1), rgba(123, 30, 58, 0.05));
  border-radius: var(--border-radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-left: 2px solid var(--color-primary);
}

/* Botão de ação */
.course-cta {
  align-self: flex-start;
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: white;
  padding: 0.6rem 1rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}

.course-cta::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;
}

.course-cta:hover::before {
  left: 100%;
}

.course-cta:hover {
  background: linear-gradient(45deg, var(--color-primary-light), var(--color-primary));
  transform: translateY(-1px);
  box-shadow: 0 5px 15px rgba(123, 30, 58, 0.4);
}

.course-cta:active {
  transform: translateY(0);
}

/* Estado vazio */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-light);
  font-size: 1.1rem;
  margin-top: var(--spacing-lg);
  padding: var(--spacing-2xl) var(--spacing-lg);
  background: var(--color-bg-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  border: 2px dashed var(--color-border);
}

.empty-state .btn-primary {
  margin-top: var(--spacing-md);
}

/* ========================
   PAGINAÇÃO
   ======================== */

.pagination {
  display: flex;
  justify-content: center;
  margin-top: var(--spacing-2xl);
}

.pagination ul {
  display: flex;
  gap: 0.4rem;
  list-style: none;
  padding: var(--spacing-sm);
  background: var(--color-bg-white);
  border-radius: var(--border-radius-md);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.pagination li a {
  display: block;
  padding: 0.6rem 0.8rem;
  background-color: #f8f8f8;
  color: var(--color-text);
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
  min-width: 40px;
  text-align: center;
  font-size: 0.9rem;
}

.pagination li a:hover {
  background-color: var(--color-border);
  transform: translateY(-1px);
}

.pagination li.active a {
  background: linear-gradient(45deg, var(--color-primary), var(--color-primary-light));
  color: white;
  box-shadow: var(--shadow-primary);
}

/* ========================
   RESPONSIVIDADE
   ======================== */

/* Tablets - 481px até 768px */
@media (max-width: 768px) {
  :root {
    --course-columns-tablet: 3;
    --course-img-height-tablet: 140px;
  }

  .container {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .course-dashboard-header {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

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

  .top-rated-section {
    padding: 2.5rem var(--spacing-md);
  }

  .section-title {
    font-size: 2.2rem;
  }

  .top-rated-courses {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .course-list {
    grid-template-columns: repeat(var(--course-columns-tablet), 1fr);
    gap: var(--spacing-md);
  }

  .course-img {
    height: var(--course-img-height-tablet);
  }

  .course-item .content {
    padding: 1.1rem;
  }

  .course-item .content strong {
    font-size: 1rem;
  }

  .course-item .content p {
    font-size: 0.83rem;
  }

  .participants {
    font-size: 0.78rem;
  }

  .course-cta {
    font-size: 0.78rem;
    padding: 0.55rem 0.9rem;
  }

  .search-form {
    padding: 1.3rem;
  }
}

/* Mobile - até 480px */
@media (max-width: 480px) {
  :root {
    --course-columns-mobile: 2;
    --course-img-height-mobile: 120px;
  }

  .container {
    padding: var(--spacing-sm) 0.5rem;
  }

  .course-dashboard-header {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .page-title {
    font-size: 1.8rem;
  }

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

  .top-rated-section {
    padding: var(--spacing-lg) var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
  }

  .section-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-lg);
  }

  .top-rated-courses {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .crown {
    font-size: 2.5rem;
  }

  .position-label {
    font-size: 0.9rem;
    padding: 0.3rem 0.8rem;
  }

  .course-list {
    grid-template-columns: repeat(var(--course-columns-mobile), 1fr);
    gap: 0.8rem;
    margin-top: var(--spacing-md);
  }

  .course-item {
    border-radius: var(--border-radius-sm);
  }

  .course-img {
    height: var(--course-img-height-mobile);
  }

  .course-item .content {
    padding: 1rem;
    gap: 0.6rem;
  }

  .course-item .content strong {
    font-size: 0.95rem;
  }

  .course-item .content p {
    font-size: 0.8rem;
    -webkit-line-clamp: 2;
  }

  .participants {
    font-size: 0.75rem;
    padding: 0.3rem 0.5rem;
  }

  .course-cta {
    padding: 0.5rem 0.8rem;
    font-size: 0.75rem;
  }

  .search-form {
    flex-direction: column;
    padding: var(--spacing-sm);
    margin: var(--spacing-lg) auto;
    gap: var(--spacing-sm);
  }

  .search-input {
    width: 100%;
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
  }

  .pagination ul {
    padding: 0.6rem;
    gap: 0.3rem;
  }

  .pagination li a {
    padding: 0.5rem 0.7rem;
    font-size: 0.8rem;
    min-width: 35px;
  }
}

/* Dispositivos muito pequenos - até 320px */
@media (max-width: 320px) {
  .course-list {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .course-item .content strong {
    font-size: 0.9rem;
  }

  .course-item .content p {
    font-size: 0.75rem;
  }

  .participants {
    font-size: 0.7rem;
  }

  .course-cta {
    font-size: 0.7rem;
    padding: 0.4rem 0.7rem;
  }
}

/* Otimizações para dispositivos touch */
@media (hover: none) and (pointer: coarse) {
  .course-item:hover {
    transform: none;
    box-shadow: var(--shadow-md);
  }

  .course-item:hover .course-img {
    transform: none;
  }

  .course-cta:hover {
    transform: none;
  }

  .btn-primary:hover {
    transform: none;
  }

  /* Aumentar hit area para touch */
  .btn-primary,
  .btn-secondary,
  .course-cta {
    min-height: 44px;
    display: inline-flex;
    justify-content: center;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .course-item:hover {
    transform: none;
  }

  .btn-primary:hover,
  .btn-secondary:hover,
  .course-cta:hover {
    transform: none;
  }
}