/* Brand: Italienisch Lernen mit Francesca — Brand Book v1.0
   Pomodoro #E90215 | Basilico #179C1C | Mandorla #FFF8F1 | Pistacchio #E8EFDC
   Nero #000 | Grigio #737477 | Plus Jakarta Sans                            */

:root {
  --pomodoro: #e90215;
  --basilico: #179c1c;
  --mandorla: #fff8f1;
  --pistacchio: #e8efdc;
  --nero: #000000;
  --grigio: #737477;
  --grigio-soft: #d9dadb;
  --bianco: #ffffff;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.05);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  background: var(--mandorla);
  color: var(--nero);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: var(--basilico);
}

/* Layout */
.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header.brand {
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--grigio-soft);
  background: var(--mandorla);
}

header.brand h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--nero);
}

header.brand h1 span {
  color: var(--grigio);
  font-weight: 500;
}

header.brand img {
  height: 44px;
  width: auto;
}

main {
  flex: 1;
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 32px;
}

footer {
  padding: 24px 32px;
  font-size: 13px;
  color: var(--grigio);
  text-align: left;
  border-top: 1px solid var(--grigio-soft);
}

/* Cards */
.card {
  background: var(--bianco);
  border: 1px solid var(--grigio-soft);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card + .card {
  margin-top: 20px;
}

h2 {
  font-size: 22px;
  margin: 0 0 6px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2.italic {
  font-style: italic;
}

.subtle {
  color: var(--grigio);
  font-size: 14px;
  margin: 0 0 20px;
}

/* Gate (password) */
.gate {
  max-width: 420px;
  margin: 80px auto;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--pistacchio);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 20px;
  width: fit-content;
}

.tabs button {
  background: transparent;
  border: 0;
  padding: 8px 16px;
  border-radius: 6px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  color: var(--nero);
}

.tabs button[aria-selected="true"] {
  background: var(--bianco);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* Form */
.field {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--nero);
}

input[type="password"],
input[type="text"],
input[type="url"],
select {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--grigio-soft);
  border-radius: var(--radius-sm);
  background: var(--bianco);
  outline: none;
  transition: border-color 0.15s;
}

input:focus,
select:focus {
  border-color: var(--basilico);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%23737477' d='M1.5 1.5 6 6 10.5 1.5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* Drop zone */
.dropzone {
  border: 2px dashed var(--grigio-soft);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  background: var(--mandorla);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone.drag {
  border-color: var(--basilico);
  background: var(--pistacchio);
}

.dropzone p {
  margin: 6px 0;
}

.dropzone .hint {
  color: var(--grigio);
  font-size: 13px;
}

.dropzone .filename {
  color: var(--basilico);
  font-weight: 600;
}

/* Buttons */
.btn {
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  border: 0;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.05s;
}

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

.btn-primary:hover {
  opacity: 0.9;
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-primary:disabled {
  background: var(--grigio-soft);
  color: var(--grigio);
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--nero);
  padding: 8px 12px;
  font-weight: 500;
}

.btn-ghost:hover {
  background: var(--pistacchio);
}

/* Row layout */
.row {
  display: flex;
  gap: 12px;
  align-items: end;
}

.row .field {
  flex: 1;
  margin-bottom: 0;
}

/* Messages */
.error {
  background: #ffe9eb;
  color: var(--pomodoro);
  border-left: 3px solid var(--pomodoro);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-top: 16px;
  font-size: 14px;
}

.status {
  font-size: 14px;
  color: var(--grigio);
  margin-top: 12px;
}

/* Loader */
.loader {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--grigio-soft);
  border-top-color: var(--basilico);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
  margin-right: 8px;
}

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

/* Results */
.result-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--grigio);
}

.result-meta strong {
  color: var(--nero);
}

.summary-card {
  background: var(--pistacchio);
  border: 1px solid var(--grigio-soft);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  font-style: italic;
}

.summary-card.clean {
  background: #e8f5e9;
}

.correction-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.correction {
  border: 1px solid var(--grigio-soft);
  border-radius: var(--radius-sm);
  padding: 16px;
  background: var(--bianco);
}

.correction-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 12px;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tag.cat {
  background: var(--pistacchio);
  color: var(--nero);
}

.tag.sev-high {
  background: #ffe9eb;
  color: var(--pomodoro);
}

.tag.sev-medium {
  background: #fff4d6;
  color: #8a6300;
}

.tag.sev-low {
  background: var(--pistacchio);
  color: var(--basilico);
}

.diff {
  font-size: 15px;
  line-height: 1.55;
  margin-bottom: 8px;
}

.diff del {
  background: #ffe9eb;
  color: var(--pomodoro);
  text-decoration: line-through;
  padding: 1px 4px;
  border-radius: 3px;
}

.diff ins {
  background: #e0f3df;
  color: var(--basilico);
  text-decoration: none;
  padding: 1px 4px;
  border-radius: 3px;
  margin-left: 6px;
  font-weight: 600;
}

.diff .arrow {
  color: var(--grigio);
  margin: 0 4px;
}

.explanation {
  color: var(--grigio);
  font-size: 14px;
}

/* Full corrected text */
.corrected-text {
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  background: var(--mandorla);
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--grigio-soft);
  max-height: 400px;
  overflow: auto;
}

.actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.hidden {
  display: none !important;
}

@media (max-width: 640px) {
  header.brand,
  main,
  footer {
    padding: 20px;
  }
  .card {
    padding: 20px;
  }
  .row {
    flex-direction: column;
    align-items: stretch;
  }
}