/* =========================================================
   Variáveis de design
   ========================================================= */
:root {
  --bg-main: #05070D;
  --bg-card: #0B1220;
  --blue: #007BFF;
  --blue-neon: #00BFFF;
  --blue-border: #183B66;
  --text-main: #FFFFFF;
  --text-muted: #94A3B8;
  --error: #FF6B6B;
  --error-bg: rgba(255, 77, 77, 0.10);
  --error-border: rgba(255, 77, 77, 0.45);
  --success: #4ADE80;
  --success-bg: rgba(74, 222, 128, 0.10);
  --success-border: rgba(74, 222, 128, 0.40);
  --radius: 16px;
}

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

body {
  font-family: 'Inter', 'Roboto', 'Segoe UI', Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  background-image:
    radial-gradient(ellipse at 15% 10%, rgba(0, 123, 255, 0.14) 0%, transparent 50%),
    radial-gradient(ellipse at 85% 90%, rgba(0, 191, 255, 0.10) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   Página de login
   ========================================================= */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-wrapper {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--blue-border);
  border-radius: 20px;
  padding: 40px 36px 28px;
  box-shadow:
    0 0 0 1px rgba(0, 123, 255, 0.05),
    0 0 40px rgba(0, 123, 255, 0.15),
    0 20px 50px rgba(0, 0, 0, 0.6);
  animation: card-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.brand-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  color: var(--blue-neon);
  background: rgba(0, 123, 255, 0.08);
  border: 1px solid var(--blue-border);
  border-radius: 16px;
}

.brand-icon svg {
  width: 36px;
  height: 36px;
}

.login-card h1 {
  text-align: center;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 6px 0 28px;
}

/* =========================================================
   Campos do formulário
   ========================================================= */
.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.input-group {
  position: relative;
}

.input-group input {
  width: 100%;
  height: 48px;
  padding: 0 46px 0 44px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-main);
  background: var(--bg-main);
  border: 1px solid var(--blue-border);
  border-radius: 12px;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.input-group input::placeholder {
  color: #5B6B82;
}

.input-group input:hover {
  border-color: #245289;
}

.input-group input:focus {
  border-color: var(--blue-neon);
  box-shadow: 0 0 0 3px rgba(0, 191, 255, 0.18);
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  width: 20px;
  height: 20px;
  transform: translateY(-50%);
  color: var(--blue);
  pointer-events: none;
  transition: color 0.25s;
}

.input-group:focus-within .input-icon {
  color: var(--blue-neon);
}

/* Botão mostrar/ocultar senha */
.toggle-password {
  position: absolute;
  right: 6px;
  top: 50%;
  width: 36px;
  height: 36px;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
}

.toggle-password:hover {
  color: var(--blue-neon);
  background: rgba(0, 123, 255, 0.10);
}

.toggle-password:focus-visible {
  outline: 2px solid var(--blue-neon);
  outline-offset: 1px;
}

.toggle-password svg {
  width: 20px;
  height: 20px;
}

.toggle-password .icon-eye-off { display: none; }
.toggle-password.is-visible .icon-eye { display: none; }
.toggle-password.is-visible .icon-eye-off { display: block; }

/* =========================================================
   Mensagens de erro / sucesso
   ========================================================= */
.message {
  min-height: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.88rem;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0 14px;
  margin-bottom: 0;
  transition: opacity 0.3s, max-height 0.3s, padding 0.3s, margin 0.3s;
}

.message.show {
  max-height: 80px;
  opacity: 1;
  padding: 10px 14px;
  margin-bottom: 18px;
}

.message.error {
  color: var(--error);
  background: var(--error-bg);
  border-color: var(--error-border);
}

.message.success {
  color: var(--success);
  background: var(--success-bg);
  border-color: var(--success-border);
}

/* Pequena vibração no card em caso de erro */
.login-card.shake {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* =========================================================
   Botões
   ========================================================= */
.btn-primary {
  position: relative;
  width: 100%;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--blue) 0%, #0062CC 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 123, 255, 0.30);
  transition: transform 0.2s, box-shadow 0.25s, filter 0.25s;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 10px 26px rgba(0, 123, 255, 0.45);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--blue-neon);
  outline-offset: 3px;
}

.btn-primary:disabled {
  opacity: 0.75;
  cursor: not-allowed;
}

/* Indicador de carregamento */
.spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn-primary.loading .spinner { display: inline-block; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

.card-footer {
  text-align: center;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--blue-border);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* =========================================================
   Página de menu
   ========================================================= */
.menu-page {
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 32px;
  background: rgba(11, 18, 32, 0.92);
  border-bottom: 1px solid var(--blue-border);
  backdrop-filter: blur(8px);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.topbar-brand .brand-mini {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: var(--blue-neon);
  background: rgba(0, 123, 255, 0.08);
  border: 1px solid var(--blue-border);
  border-radius: 10px;
}

.topbar-brand .brand-mini svg {
  width: 20px;
  height: 20px;
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  background: transparent;
  border: 1px solid var(--blue);
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.25s, box-shadow 0.25s, transform 0.2s;
}

.btn-logout:hover {
  background: rgba(0, 123, 255, 0.18);
  box-shadow: 0 0 16px rgba(0, 123, 255, 0.35);
  transform: translateY(-1px);
}

.btn-logout:focus-visible {
  outline: 2px solid var(--blue-neon);
  outline-offset: 2px;
}

.btn-logout svg {
  width: 18px;
  height: 18px;
  color: var(--blue-neon);
}

.menu-main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 48px;
  animation: card-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.menu-main > h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.welcome-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--blue-border);
  border-radius: var(--radius);
  box-shadow:
    0 0 30px rgba(0, 123, 255, 0.12),
    0 12px 30px rgba(0, 0, 0, 0.45);
}

.welcome-card .welcome-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  color: var(--blue-neon);
  background: rgba(0, 123, 255, 0.08);
  border: 1px solid var(--blue-border);
  border-radius: 14px;
}

.welcome-card .welcome-icon svg {
  width: 30px;
  height: 30px;
}

.welcome-card h2 {
  font-size: 1.3rem;
  font-weight: 600;
}

.welcome-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 4px;
}

/* Área reservada para futuros módulos */
.modules-area {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  min-height: 180px;
  padding: 24px;
  border: 1px dashed var(--blue-border);
  border-radius: var(--radius);
  background: rgba(11, 18, 32, 0.45);
}

.modules-placeholder {
  grid-column: 1 / -1;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* =========================================================
   Responsividade
   ========================================================= */
@media (max-width: 768px) {
  .topbar { padding: 12px 20px; }
  .menu-main { padding: 28px 18px 36px; }
  .menu-main > h1 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .login-wrapper { padding: 16px; }
  .login-card { padding: 32px 22px 22px; border-radius: 16px; }
  .login-card h1 { font-size: 1.4rem; }

  .welcome-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 22px;
  }

  .btn-logout span { display: none; }
  .btn-logout { padding: 0 12px; }
}

/* Respeita usuários que preferem menos movimento */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}