/* ==========================================================================
   DISEÑO DE SISTEMA - ENCUENTRA MI MASCOTA (CSS VANILLA)
   ========================================================================== */

/* Variables globales y tokens de diseño */
:root {
  --primary-color: #1098ad;      /* Verde azulado amigable */
  --primary-hover: #0b7285;
  --secondary-color: #ff922b;    /* Naranja para recompensas y llamados a la acción */
  --secondary-hover: #f76707;
  --status-lost: #fa5252;        /* Rojo para mascotas perdidas */
  --status-found: #40c057;       /* Verde para mascotas encontradas */
  --text-dark: #212529;          /* Texto principal */
  --text-muted: #495057;         /* Texto secundario */
  --text-light: #adb5bd;         /* Texto secundario suave */
  --bg-main: #f8f9fa;            /* Fondo de la web */
  --bg-card: #ffffff;            /* Fondo de tarjetas */
  --border-color: #e9ecef;
  --border-radius: 12px;
  --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);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition: all 0.25s ease;
}

/* Reset y estilos base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  overflow-x: hidden;
  max-width: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Contenedor principal */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   NAVEGACIÓN (HEADER)
   ========================================================================== */
.main-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 70px;
  padding: 10px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-color);
  white-space: nowrap;
}

.brand-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 8px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}

.nav-link:hover {
  color: var(--primary-color);
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  gap: 8px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: #ffffff;
}

.btn-danger {
  background-color: var(--status-lost);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #e03131;
}

.btn-success {
  background-color: var(--status-found);
  color: #ffffff;
}

.btn-success:hover {
  background-color: #2b8a3e;
}

/* Info del usuario logueado en Navbar */
.user-menu {
  display: flex;
  align-items: center;
  gap: 15px;
}

.username {
  font-weight: 550;
  color: var(--text-muted);
}

/* ==========================================================================
   HERO / BUSCADOR
   ========================================================================== */
.hero-section {
  background-color: #ffffff;
  padding: 40px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.hero-title {
  font-size: 2.2rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 25px;
}

.search-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
}

.search-input {
  flex: 1;
  padding: 12px 20px;
  font-size: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary-color);
}

/* ==========================================================================
   GRILLA DE PUBLICACIONES (TARJETAS)
   ========================================================================== */
.posts-section {
  padding: 45px 0;
}

.section-title {
  font-size: 1.6rem;
  margin-bottom: 25px;
  color: var(--text-dark);
  position: relative;
  display: inline-block;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  border: 1px solid var(--border-color);
}

.card-clickable {
  cursor: pointer;
}

.card-link-wrapper {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: var(--border-radius);
}

.card-link-wrapper:hover .card {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}


.card-img-container {
  position: relative;
  height: 200px;
  width: 100%;
  background-color: #e9ecef;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Etiquetas de estado */
.badge-status {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
}

.badge-status.perdido {
  background-color: var(--status-lost);
}

.badge-status.encontrado {
  background-color: var(--status-found);
}

.card-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.card-location {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.card-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.card-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-reward {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--secondary-color);
}

.card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 5px;
}

.card-link:hover {
  color: var(--primary-hover);
}

/* ==========================================================================
   PÁGINAS DE FORMULARIOS (LOGIN, REGISTRO, CREAR ANUNCIO)
   ========================================================================== */
.form-container {
  max-width: 500px;
  margin: 40px auto;
  background-color: var(--bg-card);
  padding: 35px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.form-title {
  font-size: 1.8rem;
  margin-bottom: 25px;
  text-align: center;
  color: var(--primary-color);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.form-input {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  outline: none;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--primary-color);
}

.form-input[type="file"] {
  padding: 8px;
}

textarea.form-input {
  resize: vertical;
  min-height: 100px;
}

.form-submit-btn {
  width: 100%;
  margin-top: 10px;
  padding: 12px;
}

.form-switch-text {
  text-align: center;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.form-switch-link {
  color: var(--primary-color);
  font-weight: 600;
  cursor: pointer;
}

.form-switch-link:hover {
  text-decoration: underline;
}

/* Mensajes de feedback */
.message {
  padding: 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 20px;
  font-weight: 550;
  display: none;
}

.message-success {
  background-color: #d3f9d8;
  color: #2b8a3e;
  border: 1px solid #b2f2bb;
  display: block;
}

.message-danger {
  background-color: #ffe3e3;
  color: #c92a2a;
  border: 1px solid #ffc9c9;
  display: block;
}

/* ==========================================================================
   PÁGINA DE DETALLE DEL ANUNCIO
   ========================================================================== */
.post-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 40px 0;
}

@media (min-width: 768px) {
  .post-detail-layout {
    grid-template-columns: 1.2fr 1fr;
  }
}

.post-detail-card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.detail-img-container {
  width: 100%;
  max-height: 450px;
  background-color: #e9ecef;
}

.detail-img {
  width: 100%;
  height: 100%;
  max-height: 450px;
  object-fit: contain;
}

.detail-body {
  padding: 30px;
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.detail-title {
  font-size: 2rem;
  color: var(--text-dark);
}

.detail-reward-box {
  background-color: #fff4e6;
  border: 1px solid #ffd8a8;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.detail-reward-label {
  font-weight: 600;
  color: var(--secondary-hover);
}

.detail-reward-amount {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--secondary-hover);
}

.detail-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
  margin-bottom: 25px;
}

@media (min-width: 480px) {
  .detail-info-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.info-item {
  background-color: var(--bg-main);
  padding: 15px;
  border-radius: 8px;
}

.info-item-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 5px;
}

.info-item-value {
  font-weight: 600;
  color: var(--text-dark);
}

.detail-description {
  margin-bottom: 30px;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.detail-actions {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  gap: 10px;
}

/* SECCIÓN COMENTARIOS */
.comments-section {
  background-color: var(--bg-card);
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.comments-title {
  font-size: 1.4rem;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 25px;
  max-height: 400px;
  overflow-y: auto;
}

.comment-item {
  background-color: var(--bg-main);
  padding: 15px;
  border-radius: 8px;
  border-left: 4px solid var(--primary-color);
}

.comment-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
  font-size: 0.85rem;
}

.comment-author {
  font-weight: 700;
  color: var(--text-dark);
}

.comment-date {
  color: var(--text-light);
}

.comment-body {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.comment-form-container {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.comment-login-msg {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  background-color: var(--bg-main);
  padding: 15px;
  border-radius: 8px;
}

.comment-login-msg a {
  color: var(--primary-color);
  font-weight: 600;
}

/* ==========================================================================
   PANEL DE ADMINISTRACIÓN (TALLAS / TABLAS)
   ========================================================================== */
.admin-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 10px;
}

.tab-btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  background-color: transparent;
  border: none;
  color: var(--text-muted);
  transition: var(--transition);
}

.tab-btn.active {
  background-color: var(--primary-color);
  color: #ffffff;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 30px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.admin-table th {
  background-color: #f1f3f5;
  color: var(--text-dark);
  font-weight: 700;
  padding: 15px;
  font-size: 0.9rem;
  border-bottom: 2px solid var(--border-color);
}

.admin-table td {
  padding: 15px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
  vertical-align: middle;
}

.admin-table tbody tr:hover {
  background-color: #f8f9fa;
}

.action-buttons {
  display: flex;
  gap: 5px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 4px;
}

/* MODAL DE EDICIÓN ADMIN */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 30px;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.close-modal-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-light);
}

.close-modal-btn:hover {
  color: var(--text-dark);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.main-footer {
  background-color: #212529;
  color: #ced4da;
  padding: 30px 0;
  margin-top: 50px;
  text-align: center;
  border-top: 5px solid var(--primary-color);
  font-size: 0.9rem;
}

.main-footer p {
  margin-bottom: 8px;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MÓVILES Y PANTALLAS PEQUEÑAS)
   ========================================================================== */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .navbar {
    flex-direction: column;
    min-height: auto;
    padding: 10px 0 12px;
    gap: 10px;
    justify-content: center;
  }

  .brand {
    font-size: 1.25rem;
    justify-content: center;
  }

  .brand-icon {
    font-size: 1.5rem;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
  }

  .nav-links li {
    display: inline-flex;
  }

  .nav-links .btn {
    padding: 7px 14px;
    font-size: 0.85rem;
    white-space: nowrap;
  }

  .nav-link {
    padding: 7px 10px;
    font-size: 0.88rem;
  }

  .user-menu {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    width: 100%;
  }

  .user-menu .username {
    width: 100%;
    text-align: center;
    font-size: 0.88rem;
    margin-bottom: 2px;
  }
}

@media (max-width: 400px) {
  .brand {
    font-size: 1.15rem;
  }

  .nav-links .btn {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  .nav-link {
    padding: 6px 8px;
    font-size: 0.82rem;
  }
}