/* NARBBAG - hoja de estilos propia (sin Tailwind, sin build).
   Tokens tomados de NARBBAG_UI_DESIGN_LOG.md: carbon/negro, rojo NARBBAG,
   crema/gris para texto, iconos de linea, radios pequenos. */

:root {
  color-scheme: dark;
  --color-bg: #121212;
  --color-surface: #1b1b1b;
  --color-surface-alt: #202020;
  --color-border: #2c2c2c;
  --color-red: #d0342c;
  --color-red-dark: #a8271f;
  --color-cream: #f2ede4;
  --color-grey: #9a9a9a;
  --color-grey-dim: #6f6f6f;
  --radius-sm: 4px;
  --radius-md: 8px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --nav-height: 64px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-cream);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

button {
  font-family: inherit;
}

/* Shells */

.app-shell {
  min-height: 100vh;
  padding-bottom: calc(var(--nav-height) + var(--space-4));
}

.guest-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

/* Cabecera de seccion (logo real + etiqueta de pantalla) */

.page-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.page-header__logo {
  height: 28px;
  width: auto;
}

.page-header__section {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--color-grey);
  text-transform: uppercase;
}

/* Placeholder de Inicio (shell del Milestone 1) */

.placeholder-panel {
  padding: var(--space-5) var(--space-3);
  text-align: center;
}

.placeholder-panel__text {
  font-size: 18px;
  color: var(--color-cream);
  margin: 0 0 var(--space-2);
}

.placeholder-panel__hint {
  font-size: 14px;
  color: var(--color-grey);
  margin: 0;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

/* Navegacion inferior */

.bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 var(--space-2);
  padding-bottom: env(safe-area-inset-bottom, 0);
  z-index: 10;
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--color-grey);
  font-size: 10px;
  letter-spacing: 0.05em;
}

.bottom-nav__item.is-active {
  color: var(--color-red);
}

.bottom-nav__icon svg {
  display: block;
}

.bottom-nav__add {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-red);
  color: var(--color-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  line-height: 1;
  margin-top: -22px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

/* Tarjetas de acceso privado / instalador / errores */

.auth-card,
.install-card,
.error-card {
  width: 100%;
  max-width: 380px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
}

.install-card {
  max-width: 440px;
  text-align: left;
}

.auth-card__logo,
.install-card__logo,
.error-card__logo {
  height: 32px;
  margin: 0 auto var(--space-4);
}

.install-card__logo {
  margin-left: 0;
  margin-right: 0;
}

.auth-card__title,
.install-card__title,
.error-card__title {
  font-size: 18px;
  margin: 0 0 var(--space-3);
  color: var(--color-cream);
}

.error-card__text {
  color: var(--color-grey);
  font-size: 14px;
  margin: 0 0 var(--space-3);
}

/* Formularios */

.form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form__section {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-grey);
  margin: var(--space-3) 0 0;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.form__label {
  font-size: 12px;
  color: var(--color-grey);
}

.form__input {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-cream);
  padding: 10px 12px;
  font-size: 14px;
  width: 100%;
}

.form__input:focus {
  outline: none;
  border-color: var(--color-red);
}

.form__error {
  color: var(--color-red);
  font-size: 12px;
  margin: 2px 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  text-transform: uppercase;
  margin-top: var(--space-2);
}

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

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

.alert {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin: 0 0 var(--space-3);
}

.alert--error {
  background: rgba(208, 52, 44, 0.15);
  color: var(--color-red);
  border: 1px solid rgba(208, 52, 44, 0.4);
}

/* Checklist del instalador */

.checklist {
  margin-bottom: var(--space-3);
}

.checklist__title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-grey);
  margin: var(--space-3) 0 var(--space-1);
}

.checklist__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.checklist__item {
  font-size: 13px;
}

.checklist__item--ok {
  color: var(--color-cream);
}

.checklist__item--fail {
  color: var(--color-red);
}

.checklist__item--warn {
  color: var(--color-grey);
}