/* Reset básico e tipografia */
:root {
  --primary: #09a530;
  --primary-hover: #078c26;
  --primary-light: #dcfce7;
  --bg-body: #f3f4f6;
  --bg-card: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #d1d5db;
  --input-bg: #ffffff;
  --header-bg: #09a530;
  --header-text: #ffffff;
  --footer-bg: #1f2937;
  --footer-text: #9ca3af;
}

body.dark-mode {
  --primary: #10b981;
  --primary-hover: #059669;
  --primary-light: #064e3b;
  --bg-body: #0b130e;
  --bg-card: #132219;
  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  --border-color: #1e3a27;
  --input-bg: #0d1a12;
  --header-bg: #0d1a12;
  --header-text: #f8fafc;
  --footer-bg: #0d1a12;
  --footer-text: #94a3b8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: -webkit-fill-available;
  line-height: 1.5;
  padding-bottom: env(safe-area-inset-bottom, 0);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Header Responsivo com botão de tema */
header {
  background-color: var(--header-bg);
  color: var(--header-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(12px, env(safe-area-inset-top, 12px)) 16px 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.header-brand {
  display: flex;
  align-items: center;
}

header .logo {
  width: 36px;
  height: 36px;
  margin-right: 12px;
  border-radius: 8px;
  flex-shrink: 0;
}

header h1 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

/* Botão de Alternância de Tema */
.btn-theme-toggle {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--header-text);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 1.1rem;
}

body.dark-mode .btn-theme-toggle {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-theme-toggle:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

/* Container do Formulário */
.container {
  margin: 0 auto;
  width: 92%;
  max-width: 440px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  padding: 24px 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

/* Banner de Status / Offline */
.status-banner {
  padding: 10px 14px;
  margin-bottom: 18px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeIn 0.3s ease;
  line-height: 1.4;
}

.status-banner.offline {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.status-banner.syncing {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.status-banner.success {
  background-color: #dcfce7;
  color: #15803d;
  border: 1px solid #bbf7d0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Formulário & Grupos */
.form-group {
  margin-bottom: 16px;
}

label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  display: block;
  margin-bottom: 6px;
}

/* Inputs e Selects Otimizados para Toque (iOS / Android) */
input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border: 1.5px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px; /* Evita zoom automático no iOS Safari */
  color: var(--text-main);
  background-color: var(--input-bg);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.25s ease;
  -webkit-appearance: none;
  appearance: none;
}

select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(9, 165, 48, 0.2);
}

textarea {
  min-height: 80px;
  resize: vertical;
  line-height: 1.4;
}

/* Container de Botões */
.buttons {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

button {
  padding: 12px 18px;
  min-height: 48px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 0.15s ease, transform 0.1s ease;
  user-select: none;
}

button:active {
  transform: scale(0.98);
}

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

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

.btn-danger {
  background-color: #ef4444;
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #dc2626;
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Popup Responsivo */
.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--bg-card);
  padding: 24px 20px;
  width: 90%;
  max-width: 400px;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.15);
  text-align: center;
  z-index: 2000;
  border-radius: 16px;
}

.popup p {
  margin: 8px 0;
  font-size: 0.95rem;
  color: var(--text-main);
}

.popup-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.popup-actions button {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.92rem;
  min-height: 44px;
  border-radius: 8px;
}

.hidden {
  display: none !important;
}

body.popup-active {
  overflow: hidden;
}

/* Footer Padronizado */
footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  border-top: 1px solid var(--border-color);
  text-align: center;
  padding: 16px 12px;
  font-size: 0.8rem;
  margin-top: 24px;
  padding-bottom: max(16px, env(safe-area-inset-bottom, 16px));
}

/* Media Queries para Telas Maiores e Tablets */
@media (min-width: 600px) {
  .container {
    padding: 28px 24px;
    margin: 20px auto;
  }

  header h1 {
    font-size: 1.35rem;
  }
}

@media (max-width: 380px) {
  .container {
    width: 95%;
    padding: 18px 14px;
  }

  header h1 {
    font-size: 1.05rem;
  }

  .buttons {
    flex-direction: column;
  }
}