/* QuickDrop — mundo visual "Linhas de Metrô": placas esmaltadas, círculos de linha e um diagrama de rota. */

@font-face {
  font-family: "Barlow";
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/barlow-latin-500-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Barlow";
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/barlow-latin-700-normal.woff2") format("woff2");
}

@font-face {
  font-family: "Barlow";
  font-weight: 800;
  font-display: swap;
  src: url("../fonts/barlow-latin-800-normal.woff2") format("woff2");
}

:root {
  --ground: #f4f6f8;
  --surface: #ffffff;
  --ink: #101820;
  --ink-soft: #3b4652;
  --outline: #101820;
  --blue: #0455a1;
  --on-blue: #ffffff;
  --green: #007a5e;
  --on-green: #ffffff;
  --placeholder: #5d6874;
  /* Só o código usa fonte monoespaçada: do sistema, sem baixar nada. */
  --font-code: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --signal: #ffd100;
  --on-signal: #101820;
  --danger: #b3261e;

  --gutter: clamp(1rem, 5vw, 4.5rem);
  --radius: 6px;
  --stroke: 3px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0d141b;
    --surface: #141d26;
    --ink: #eef2f6;
    --ink-soft: #b4bfca;
    --outline: #5b6b7b;
    --blue: #6aaeff;
    --on-blue: #0d141b;
    --green: #3dd6a6;
    --on-green: #0d141b;
    --placeholder: #8e9aa7;
    --danger: #ff8a80;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Barlow", "Segoe UI", system-ui, sans-serif;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1.45;
  caret-color: var(--blue);
  scrollbar-color: var(--outline) var(--ground);
}

::selection {
  background: var(--signal);
  color: var(--on-signal);
}

:focus-visible {
  outline: var(--stroke) solid var(--ink);
  outline-offset: 3px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.25rem, 1.2rem + 4vw, 4.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.lead {
  max-width: 44ch;
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: 1.375rem;
  line-height: 1.35;
}

.muted {
  color: var(--ink-soft);
}

/* ---------- barra do topo ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  padding: 0 var(--gutter);
  border-bottom: 4px solid var(--outline);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.roundel {
  display: grid;
  flex: none;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: var(--on-blue);
  font-weight: 800;
}

.roundel svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.language {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.language button {
  min-width: 44px;
  min-height: 44px;
  border: 0;
  border-radius: var(--radius);
  background: none;
  color: var(--ink-soft);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.language button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--ground);
}

/* ---------- páginas ---------- */

.page-footer {
  padding: 0 var(--gutter) 2rem;
  font-size: 0.9rem;
}

.about-section {
  max-width: 40rem;
  margin-top: 1.75rem;
}

.page {
  padding: clamp(1.5rem, 4vw, 3rem) var(--gutter) 3rem;
}

.signs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.sign {
  overflow: hidden;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
}

.sign__band {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 72px;
  padding: 0 1.5rem;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.sign--blue .sign__band {
  background: var(--blue);
  color: var(--on-blue);
}

.sign--green .sign__band {
  background: var(--green);
  color: var(--on-green);
}

.sign__band .roundel {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--on-blue);
  color: var(--blue);
}

.sign--green .sign__band .roundel {
  background: var(--on-green);
  color: var(--green);
}

.sign__body {
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem;
}

/* ---------- formulários ---------- */

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

label,
legend {
  padding: 0;
  font-size: 1rem;
  font-weight: 700;
}

.field {
  display: grid;
  gap: 0.5rem;
}

input[type="text"],
input[type="password"],
input[type="url"] {
  width: 100%;
  min-height: 60px;
  padding: 0 1rem;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

input::placeholder {
  color: var(--placeholder);
  font-weight: 500;
  letter-spacing: 0;
  opacity: 1;
}

/* O link é longo: letras menores e sem espaçamento para caber mais dele. */
input[type="url"] {
  font-size: 1rem;
  letter-spacing: 0;
}

input:hover {
  border-color: var(--ink);
}

input:focus-visible {
  border-color: var(--ink);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 0.5rem;
  overflow: hidden;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
}

.segmented label {
  position: relative;
  display: block;
  border-right: var(--stroke) solid var(--outline);
}

.segmented label:last-child {
  border-right: 0;
}

.segmented input {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented span {
  display: block;
  padding: 0.875rem 0.5rem;
  font-size: 1.375rem;
  font-weight: 700;
  text-align: center;
}

.segmented label:hover input:not(:checked) + span {
  background: color-mix(in srgb, var(--blue) 14%, transparent);
}

.segmented input:checked + span {
  background: var(--blue);
  color: var(--on-blue);
}

.segmented input:focus-visible + span {
  outline: var(--stroke) solid var(--ink);
  outline-offset: -6px;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-height: 44px;
  font-size: 1.125rem;
  cursor: pointer;
}

/* Caixa desenhada com o mesmo contorno de 3px das placas. */
.check input {
  display: grid;
  flex: none;
  width: 1.75rem;
  height: 1.75rem;
  margin: 0;
  place-content: center;
  appearance: none;
  border: var(--stroke) solid var(--outline);
  border-radius: 4px;
  background: var(--surface);
  cursor: pointer;
}

.check input::before {
  content: "";
  width: 0.4rem;
  height: 0.8rem;
  margin-top: -0.125rem;
  transform: rotate(45deg) scale(0);
  border: solid var(--on-blue);
  border-width: 0 3px 3px 0;
}

.check input:checked {
  border-color: var(--blue);
  background: var(--blue);
}

.check input:checked::before {
  transform: rotate(45deg) scale(1);
}

.hint {
  color: var(--ink-soft);
  font-size: 1rem;
}

.error {
  min-height: 0;
  color: var(--danger);
  font-weight: 700;
}

.status {
  margin-top: 1rem;
  font-weight: 700;
}

.error:empty,
.status:empty {
  display: none;
}

.button {
  display: grid;
  width: 100%;
  min-height: 60px;
  place-items: center;
  border: var(--stroke) solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-size: 1.375rem;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

.button--blue {
  background: var(--blue);
  color: var(--on-blue);
}

.button--green {
  background: var(--green);
  color: var(--on-green);
}

.button--outline {
  border-color: var(--outline);
  background: none;
  color: var(--ink);
}

.button:hover:not(:disabled) {
  filter: brightness(1.1);
}

.button--outline:hover:not(:disabled) {
  border-color: var(--ink);
  filter: none;
}

.button:active:not(:disabled) {
  transform: translateY(2px);
}

.button:disabled {
  cursor: progress;
  opacity: 0.6;
}

/* ---------- diagrama da rota (elemento de assinatura) ---------- */

.route {
  position: relative;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.route__stations {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

/* A linha: azul da origem até a sala, verde da sala até o destino. */
.route__stations::before {
  content: "";
  position: absolute;
  top: 21px;
  right: calc(100% / 6);
  left: calc(100% / 6);
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(90deg, var(--blue) 50%, var(--green) 50%);
}

.station {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 0.25rem;
  text-align: center;
}

.station__dot {
  z-index: 1;
  width: 56px;
  height: 56px;
  border: 10px solid var(--ink);
  border-radius: 50%;
  background: var(--ground);
}

/* Aparelho conectado agora: o ponto da estação fica verde (verde é o destino). */
.station--online .station__dot {
  background: var(--green);
}

.station--offline .station__detail {
  color: var(--danger);
  font-weight: 700;
}

.station__name {
  margin-top: 0.5rem;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.station__detail {
  color: var(--ink-soft);
  font-size: 1.125rem;
}

/* Amarelo de sinalização: só para tempo restante e para o que está em trânsito. */
.tag {
  display: inline-block;
  padding: 0.125rem 0.625rem;
  border-radius: 4px;
  background: var(--signal);
  color: var(--on-signal);
  font-size: 1.125rem;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

/* O trem viaja pela linha, saindo da estação de origem e parando no meio do caminho. */
.route__train {
  position: absolute;
  top: 8px;
  left: calc(100% / 3);
  z-index: 2;
  padding: 0.25rem 1rem;
  transform: translateX(-50%);
  border: var(--stroke) solid var(--ink);
  border-radius: 999px;
  background: var(--signal);
  color: var(--on-signal);
  font-size: 1.125rem;
  font-weight: 800;
  animation: ride 2.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes ride {
  from {
    left: calc(100% / 6 + 5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .route__train {
    animation: none;
  }
}

/* ---------- página da sala ---------- */

.room-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
}

.room-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1.5rem;
}

.tag--large {
  padding: 0.25rem 0.875rem;
  font-size: 1.375rem;
}

.tag:empty {
  display: none;
}

.room-code {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.qr {
  width: min(100%, 20rem);
  padding: 0.25rem;
  overflow: hidden;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: #ffffff;
}

.qr svg {
  display: block;
  width: 100%;
  height: auto;
}

.typed-code {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.5rem);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}

.note {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  max-width: 62ch;
  margin-top: 2rem;
  color: var(--ink-soft);
}

.note svg {
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: 0.125rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.single {
  max-width: 34rem;
  margin-top: 2rem;
}

.spaced {
  margin-top: 1.5rem;
}

.noscript {
  padding: 1rem var(--gutter);
  background: var(--signal);
  color: var(--on-signal);
  font-weight: 700;
}

/* ---------- arquivos ---------- */

.section-title {
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  scroll-margin-top: 1rem;
}

.dropzone {
  display: grid;
  justify-items: center;
  gap: 1rem;
  padding: 1.5rem 1rem;
  border: var(--stroke) dashed var(--outline);
  border-radius: var(--radius);
  text-align: center;
}

.dropzone--active {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 12%, transparent);
}

.dropzone__text {
  font-size: 1.375rem;
  font-weight: 800;
}

.dropzone .button {
  max-width: 20rem;
}

.transfers,
.file-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.transfer,
.file {
  display: grid;
  gap: 0.625rem;
  padding-top: 1rem;
  border-top: var(--stroke) solid var(--outline);
}

.transfer__top,
.file__info {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.25rem 1rem;
}

.transfer__name,
.file__name {
  min-width: 0;
  font-size: 1.25rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.transfer__size,
.file__size {
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.transfer__status {
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.transfer__status.error {
  color: var(--danger);
}

/* A barra de envio é amarela: amarelo é o que está em trânsito. */
.transfer__bar {
  width: 100%;
  height: 1.25rem;
  overflow: hidden;
  appearance: none;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
}

.transfer__bar::-webkit-progress-bar {
  background: var(--surface);
}

.transfer__bar::-webkit-progress-value {
  background: var(--signal);
}

.transfer__bar::-moz-progress-bar {
  background: var(--signal);
}

.file__preview {
  display: block;
  max-width: 100%;
  max-height: 20rem;
  object-fit: contain;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: var(--ground);
}

.file__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button--small {
  width: auto;
  min-height: 44px;
  padding: 0 1.25rem;
  font-size: 1.125rem;
}

.button--danger {
  border-color: var(--danger);
  color: var(--danger);
}

.empty {
  color: var(--ink-soft);
}

.empty a {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--ink);
  font-weight: 700;
  text-underline-offset: 0.2em;
}

/* ---------- texto e clips ---------- */

textarea {
  display: block;
  width: 100%;
  min-height: 6rem;
  padding: 0.875rem 1rem;
  border: var(--stroke) solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 1.125rem;
  line-height: 1.45;
  resize: vertical;
}

textarea::placeholder {
  color: var(--placeholder);
  opacity: 1;
}

textarea:hover,
textarea:focus-visible {
  border-color: var(--ink);
}

.shared-text {
  min-height: 16rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.jump .button {
  padding: 0 1rem;
}

.signs {
  scroll-margin-top: 1rem;
}

.conflict {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
  border: var(--stroke) solid var(--danger);
  border-radius: var(--radius);
}

.clip-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.clip {
  display: grid;
  gap: 0.625rem;
  padding-top: 1rem;
  border-top: var(--stroke) solid var(--outline);
}

.clip__text {
  max-height: 9rem;
  margin: 0;
  padding: 0.75rem 1rem;
  overflow: auto;
  border-radius: var(--radius);
  background: var(--ground);
  font: inherit;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.status--error {
  color: var(--danger);
}

/* ---------- código ---------- */

/* O código mantém a indentação: nada de quebrar linhas (rola para o lado) e a tabulação vale 4 colunas. */
.code-field {
  font-family: var(--font-code);
  font-size: 0.95rem;
  line-height: 1.5;
  tab-size: 4;
  /* Sem ligaduras: "=>" aparece como dois caracteres, exatamente o que será copiado. */
  font-variant-ligatures: none;
  white-space: pre;
  overflow: auto;
  overflow-wrap: normal;
}

.shared-code {
  min-height: 18rem;
}

.code-clip-input {
  min-height: 9rem;
}

.clip__text--code {
  max-height: 16rem;
  font-family: var(--font-code);
  font-size: 0.95rem;
  line-height: 1.5;
  tab-size: 4;
  font-variant-ligatures: none;
  white-space: pre;
  overflow-wrap: normal;
}

/* ---------- celular ---------- */

@media (max-width: 760px) {
  .topbar {
    min-height: 64px;
  }

  .brand {
    font-size: 1.5rem;
  }

  .page {
    padding-top: 1.25rem;
  }

  .lead {
    margin-top: 0.75rem;
    font-size: 1.125rem;
  }

  .sign__body {
    gap: 1rem;
    padding: 1.25rem;
  }

  .signs {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
  }

  .sign__band {
    min-height: 56px;
    padding: 0 1.25rem;
    font-size: 1.375rem;
  }

  /* No celular o diagrama fica na vertical, com as estações empilhadas. */
  .route__stations {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.5rem;
  }

  .route__stations::before {
    top: 21px;
    right: auto;
    bottom: 21px;
    left: 21px;
    width: 14px;
    height: auto;
    background: linear-gradient(180deg, var(--blue) 50%, var(--green) 50%);
  }

  .station {
    grid-template-columns: 56px 1fr;
    column-gap: 1rem;
    justify-items: start;
    text-align: left;
  }

  .station__dot {
    grid-row: span 2;
  }

  .station__name {
    margin-top: 0;
    font-size: 1.5rem;
  }

  .route__train {
    display: none;
  }
}