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

:root {
  --primary-color: #f97316;
  --primary-hover: #ea580c;
  --success-color: #16a34a;
  --success-hover: #15803d;
  --danger-color: #dc2626;
  --danger-hover: #b91c1c;
  --dark-bg: #1e293b;
  --card-bg: rgba(30, 41, 59, 0.9);
  --input-bg: #334155;
  --border-radius: 8px;
  --text-light: #f8fafc;
  --text-muted: #94a3b8;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --transition: all 0.2s ease-in-out;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, 
    "Open Sans", "Helvetica Neue", sans-serif;
  color: var(--text-light);
  line-height: 1.5;
  /* 
    A imagem de fundo está no mesmo diretório,
    então basta usar o nome do arquivo
    Exemplo: background.jpg
  */
  background-image: url('background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  height: 100vh;
}

.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 1.875rem;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

/* Header Styles */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
}

.logo i {
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-right: 0.5rem;
}

.header-left, .header-right {
  display: flex;
  gap: 1rem;
}

.icon-button {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.icon-button:hover {
  color: var(--primary-color);
}

/* Card Styles */
.card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-title {
  display: flex;
  align-items: center;
}

.card-title i {
  color: var(--primary-color);
  margin-right: 0.5rem;
  font-size: 1.25rem;
}

.card-actions {
  display: flex;
  gap: 0.5rem;
}

/* Form Styles */
.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
}

input, textarea {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  background-color: var(--input-bg);
  color: var(--text-light);
  transition: var(--transition);
  outline: none;
}

input:focus, textarea:focus {
  box-shadow: 0 0 0 2px var(--primary-color);
}

textarea {
  min-height: 16rem;
  resize: vertical;
  font-family: inherit;
}

.template-textarea {
  min-height: 24rem;
  font-family: monospace;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  color: var(--text-light);
}

.btn i {
  margin-right: 0.5rem;
}

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

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

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

.secondary-btn:hover {
  background-color: #475569;
}

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

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

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

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

.small-btn {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  background-color: var(--input-bg);
}

.small-btn:hover {
  background-color: #475569;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.button-group {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.link-button {
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  transition: var(--transition);
}

.link-button:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* Layout */
.two-column-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .two-column-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.full-width {
  grid-column: 1 / -1;
}

/* Auth Forms */
.auth-form {
  max-width: 28rem;
  margin: 0 auto;
  padding: 2rem;
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.auth-form h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-form .btn {
  width: 100%;
  margin-top: 1rem;
}

.form-footer {
  margin-top: 1rem;
  text-align: center;
}

/* Message History */
.message-history {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 24rem;
  overflow-y: auto;
}

.message-item {
  background-color: var(--input-bg);
  border-radius: var(--border-radius);
  padding: 1rem;
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.message-timestamp {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.message-delete {
  color: var(--danger-color);
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.message-delete:hover {
  color: var(--danger-hover);
}

.message-content {
  white-space: pre-wrap;
  font-size: 0.875rem;
  word-break: break-word;
}

/* User Lists */
.user-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.user-item {
  background-color: var(--input-bg);
  border-radius: var(--border-radius);
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-info p {
  margin-bottom: 0.25rem;
}

.user-name {
  font-weight: 600;
}

.user-email {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.user-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.user-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.access-days-input {
  width: 100px;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--input-bg);
  background-color: var(--input-bg);
  color: var(--text-light);
  font-size: 0.875rem;
}

.empty-message {
  color: var(--text-muted);
  font-style: italic;
}

.admin-section {
  margin-bottom: 2rem;
}

/* Utility Classes */
.hidden {
  display: none !important;
}