:root {
  --radius-lg: 18px;
  --transition-fast: 0.2s ease-out;
}

/* Tema claro (default) */
body.theme-light {
  --bg-page: radial-gradient(circle at top, #e7f1ff, #cfd9ff, #001133);
  --bg-card: rgba(255, 255, 255, 0.96);
  --border-card: rgba(255, 255, 255, 0.5);
  --text-main: #061020;
  --text-muted: #5c6270;
  --text-soft: #7c8292;
  --accent: #00c2a8;
  --accent-soft: rgba(0, 194, 168, 0.08);
  --accent-strong: #00927e;
  --input-bg: #f4f6fb;
  --input-border: rgba(10, 20, 40, 0.06);
  --input-placeholder: #a3a8b8;
  --btn-text: #ffffff;
  --shadow-card: 0 18px 40px rgba(0, 0, 40, 0.25);
}

/* Tema escuro */
body.theme-dark {
  --bg-page: radial-gradient(circle at top, #000815, #001120, #000814);
  --bg-card: rgba(6, 14, 30, 0.96);
  --border-card: rgba(255, 255, 255, 0.05);
  --text-main: #f7f9ff;
  --text-muted: #b2bbd5;
  --text-soft: #8f97b4;
  --accent: #00d6b1;
  --accent-soft: rgba(0, 214, 177, 0.08);
  --accent-strong: #00a088;
  --input-bg: rgba(0, 10, 30, 0.9);
  --input-border: rgba(255, 255, 255, 0.08);
  --input-placeholder: #7b83a0;
  --btn-text: #041012;
  --shadow-card: 0 20px 55px rgba(0, 0, 0, 0.55);
}

/* Reset básico */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  transition: background 0.4s ease, color 0.2s ease;
}

/* Layout principal */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 520px;
  background: var(--bg-card);
  border-radius: 26px;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-card);
  padding: 24px 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  backdrop-filter: blur(20px);
}

/* Header */

.auth-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.auth-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.auth-logo {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--accent);
}

.auth-subtitle {
  font-size: 0.78rem;
  color: var(--text-soft);
}

/* Botão de tema */

.theme-toggle-btn {
  border-radius: 999px;
  border: 1px solid var(--border-card);
  padding: 6px 10px;
  background: var(--accent-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  cursor: pointer;
  color: var(--text-soft);
  transition: background var(--transition-fast), border var(--transition-fast),
    transform 0.08s ease-out;
}

.theme-toggle-btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.theme-toggle-icon {
  font-size: 0.9rem;
}

/* Conteúdo */

.auth-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-title {
  font-size: 1.4rem;
  font-weight: 700;
}

.auth-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Formulário */

.auth-form {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-soft);
}

.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="tel"],
.auth-form input[type="password"] {
  border-radius: 12px;
  border: 1px solid var(--input-border);
  padding: 10px 11px;
  background: var(--input-bg);
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
  transition: border var(--transition-fast), box-shadow var(--transition-fast),
    background var(--transition-fast), transform 0.05s ease-out;
  width: 100%;
}

.auth-form input::placeholder {
  color: var(--input-placeholder);
}

.auth-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft);
  transform: translateY(-0.5px);
}

/* Senha */

.password-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
}

.password-wrapper input {
  flex: 1;
}

.password-toggle {
  border: none;
  border-radius: 999px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.78rem;
  background: transparent;
  color: var(--text-soft);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.password-toggle:hover {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

/* Checkbox */

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-soft);
  line-height: 1.5;
  margin-top: 4px;
}

.checkbox-group input[type="checkbox"] {
  margin-top: 2px;
  cursor: pointer;
}

/* Botão principal */

.form-footer {
  margin-top: 6px;
}

.btn-primary {
  width: 100%;
  border-radius: 999px;
  border: none;
  padding: 11px 16px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: var(--btn-text);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.28);
  transition: transform 0.08s ease-out, box-shadow var(--transition-fast), opacity 0.15s;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.32);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* Helper / termos */

.auth-helper {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.auth-helper a {
  color: var(--accent-strong);
  font-weight: 500;
  text-decoration: none;
}

.auth-helper a:hover {
  text-decoration: underline;
}

.auth-terms {
  margin-top: 10px;
  font-size: 0.7rem;
  color: var(--text-soft);
}

/* Footer */

.auth-footer {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-card);
  font-size: 0.74rem;
  color: var(--text-soft);
}

/* Responsivo */

@media (max-width: 600px) {
  .auth-card {
    padding: 18px 16px 14px;
    border-radius: 20px;
  }

  .auth-title {
    font-size: 1.2rem;
  }

  .auth-page {
    padding: 16px;
  }
}