@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@500;600;700;800&family=Source+Sans+3:wght@400;500;600&display=swap");

:root {
  --primary: #0a3a8f;
  --accent: #3168ce;
  --primary-dark: #0d2956;
  --bg: #f8f9fa;
  --surface: #ffffff;
  --callout: #eef3fb;
  --ink: #122238;
  --muted: #51607a;
  --line: #cfdbf4;
  --ok: #1b8755;
  --bad: #c23a4e;
  --shadow-soft: 0 20px 35px rgba(10, 38, 86, 0.07);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  scroll-behavior: smooth;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 8%, rgba(49, 104, 206, 0.16) 0%, transparent 30%),
    radial-gradient(circle at 84% 12%, rgba(10, 58, 143, 0.1) 0%, transparent 32%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}

.app-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: 22px 20px 42px;
  animation: page-in 420ms ease-out;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.brand {
  margin: 0;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: 0.02em;
  color: var(--primary);
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.topnav a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.94rem;
}

.topnav a:hover {
  color: var(--accent);
}

.hero {
  padding: 22px 24px 20px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(10, 58, 143, 0.08), rgba(49, 104, 206, 0.06)),
    var(--surface);
  box-shadow: var(--shadow-soft);
}

.eyebrow {
  margin: 0 0 8px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: clamp(2rem, 2.5vw + 1rem, 3.4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--primary);
  max-width: 20ch;
  text-wrap: pretty;
}

.subtext {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 1.15rem;
  color: var(--muted);
}

.controls {
  margin-top: 18px;
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: 16px;
  background: var(--callout);
  border: 1px solid var(--line);
}

.quick-start-card {
  display: grid;
  gap: 12px;
}

.quick-start-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.quick-start-meta {
  display: grid;
  gap: 8px;
}

.quick-title {
  margin: 0;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.quick-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-pill {
  border-radius: 999px;
  padding: 6px 10px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid #c1cff0;
  color: var(--primary-dark);
  background: #fff;
}

.status-pill.source {
  border-color: #b2c7f3;
  background: #f7faff;
}

.status-pill.synced {
  border-color: #9fd5b9;
  color: #145237;
  background: #ecf8f2;
}

.status-pill.offline {
  border-color: #e6b8c2;
  color: #8d2636;
  background: #fff3f6;
}

.scope-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.scope-row .chapter-input {
  min-width: 220px;
}

.quick-compact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.stepper {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.step {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid #c0cff0;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.88rem;
  background: #fff;
  cursor: pointer;
  user-select: none;
}

.step:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.step.active {
  color: #fff;
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.step-panel {
  display: grid;
  gap: 10px;
}

.step-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.controls-row-primary {
  align-items: end;
}

.controls-row-secondary {
  align-items: flex-start;
  justify-content: space-between;
}

.file-input {
  display: grid;
  gap: 6px;
  min-width: 260px;
  font-weight: 600;
  color: var(--primary-dark);
}

.mode-stack {
  display: grid;
  gap: 8px;
}

.mode-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.mode-subgroup {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.group-label {
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-right: 2px;
}

.mode-btn {
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid #bed0f4;
  background: #fff;
  color: var(--primary);
  font-size: 0.86rem;
}

.mode-btn:hover {
  background: #f5f8ff;
  color: var(--primary-dark);
}

.mode-btn.active {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
}

.switch-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid #bed0f4;
  background: #fff;
}

.switch-wrap {
  position: relative;
  display: inline-flex;
}

.switch-wrap input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.slider {
  position: relative;
  width: 48px;
  height: 26px;
  border-radius: 999px;
  background: #c6d4ef;
  transition: background-color 140ms ease;
}

.slider::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 4px rgba(13, 41, 86, 0.22);
  transition: transform 140ms ease;
}

.switch-wrap input:checked + .slider {
  background: var(--accent);
}

.switch-wrap input:checked + .slider::before {
  transform: translateX(22px);
}

.switch-copy {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.inline-error {
  margin: 0;
  color: #aa2b3d;
  font-weight: 600;
  font-size: 0.92rem;
}

.inline-note {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

input[type="file"] {
  border: 1px dashed var(--accent);
  border-radius: 11px;
  padding: 7px 10px;
  font: inherit;
  color: var(--ink);
  background: #fcfdff;
}

button {
  height: 40px;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 0 16px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  color: #fff;
  background: var(--primary-dark);
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease, border-color 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: var(--primary);
}

button.ghost {
  color: var(--primary);
  background: #fff;
  border-color: var(--line);
}

button.ghost:hover {
  background: #f5f8ff;
}

.status-row {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 3px 2px;
  font-weight: 600;
  color: var(--muted);
}

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

.timer-warning {
  color: var(--bad);
}

.mini-bar {
  position: sticky;
  top: 8px;
  z-index: 8;
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-soft);
}

.mini-bar span {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.mini-bar .ghost {
  margin-left: auto;
  height: 34px;
  padding: 0 12px;
}

.db-panel {
  margin-top: 10px;
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #f7faff;
}

.db-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: end;
}

.db-input,
.chapter-input {
  display: grid;
  gap: 5px;
  min-width: 180px;
  font-weight: 600;
  color: var(--primary-dark);
}

.db-input.db-wide {
  min-width: 260px;
  flex: 1 1 300px;
}

.db-input input,
.chapter-input select {
  height: 40px;
  border: 1px solid #c0cff0;
  border-radius: 10px;
  padding: 0 10px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.mode-subgroup .chapter-input {
  min-width: 220px;
}

.db-meta {
  justify-content: space-between;
  align-items: center;
}

.db-meta p {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.db-meta p.error {
  color: var(--bad);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(13, 41, 86, 0.34);
}

.modal-card {
  width: min(760px, 100%);
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 24px 36px rgba(13, 41, 86, 0.2);
  padding: 16px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.modal-header h2 {
  margin: 0;
  font-family: "Poppins", "Segoe UI", sans-serif;
  color: var(--primary);
}

.sync-section {
  display: grid;
  gap: 10px;
}

.sync-section h3 {
  margin: 0;
  color: var(--primary-dark);
  font-family: "Poppins", "Segoe UI", sans-serif;
}

.advanced {
  border: 1px solid #d2ddf6;
  border-radius: 12px;
  padding: 8px 10px;
  background: #f9fbff;
}

.advanced summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--primary-dark);
}

.advanced-grid {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.board-wrap {
  margin-top: 10px;
  overflow-x: auto;
}

.board {
  position: relative;
  min-width: 690px;
  display: grid;
  grid-template-columns: repeat(2, minmax(230px, 340px));
  justify-content: center;
  gap: 42px;
  padding: 22px 26px 24px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

#lineLayer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.column h2 {
  margin: 0 0 10px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: 1.9rem;
  line-height: 1;
  color: var(--primary);
}

.word-list {
  display: grid;
  gap: 11px;
}

.word-box {
  width: 100%;
  min-height: 50px;
  border: 1px solid #c8d7f6;
  border-radius: 12px;
  padding: 11px 13px;
  text-align: left;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  background: #fff;
  cursor: pointer;
  transition: border-color 130ms ease, transform 130ms ease, background-color 130ms ease;
}

.word-box:hover {
  border-color: var(--accent);
  background: #f7faff;
  transform: translateY(-1px);
}

.word-box.selected {
  border-color: var(--primary);
  background: var(--callout);
}

.word-box.matched {
  border-color: #8bc6ab;
  background: #edf9f2;
  color: #145237;
  cursor: default;
}

.word-box.error {
  border-color: #eb9aaa;
  background: #fff4f6;
}

.hidden {
  display: none;
}

.mode-panel {
  margin-top: 10px;
}

.write-panel,
.flash-panel {
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.write-panel {
  padding: 20px 22px;
}

.write-panel h2 {
  margin: 0 0 12px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  color: var(--primary);
}

.write-list {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
}

.write-row {
  display: grid;
  grid-template-columns: minmax(120px, 220px) 1fr minmax(120px, 200px);
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #d7e2f7;
  background: #fbfdff;
}

.write-finnish {
  margin: 0;
  font-weight: 700;
  color: var(--primary-dark);
}

.write-input {
  height: 40px;
  border-radius: 10px;
  border: 1px solid #c6d7f7;
  padding: 0 10px;
  font: inherit;
}

.write-result {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.write-row.correct {
  border-color: #9fd5b9;
  background: #f1fbf5;
}

.write-row.correct .write-result {
  color: var(--ok);
}

.write-row.wrong {
  border-color: #efb4bf;
  background: #fff6f8;
}

.write-row.wrong .write-result {
  color: var(--bad);
}

.write-row.unanswered {
  border-style: dashed;
}

.flash-panel {
  max-width: 620px;
  padding: 22px;
}

.flash-progress {
  margin: 0 0 8px;
  font-weight: 700;
  color: var(--accent);
}

.flash-label {
  margin: 0;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.flash-word {
  margin: 7px 0 14px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  font-size: clamp(1.8rem, 1.8vw + 1rem, 2.6rem);
  color: var(--primary);
}

.flash-input-wrap {
  display: grid;
  gap: 6px;
  font-weight: 600;
  color: var(--primary-dark);
}

.flash-input-wrap input {
  height: 42px;
  border-radius: 10px;
  border: 1px solid #c6d7f7;
  padding: 0 10px;
  font: inherit;
}

.flash-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.flash-feedback {
  min-height: 24px;
  margin: 12px 0 0;
  font-weight: 700;
}

.flash-feedback.ok {
  color: var(--ok);
}

.flash-feedback.error {
  color: var(--bad);
}

.help {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--callout);
  color: var(--muted);
}

.help p {
  margin: 2px 0;
}

.info-panel {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
}

.info-panel h2 {
  margin: 0 0 6px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  color: var(--primary);
}

.info-panel p {
  margin: 3px 0;
}

.info-note {
  font-size: 0.95rem;
}

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .topnav {
    gap: 14px;
  }

  .hero h1 {
    max-width: 100%;
  }
}

@media (max-width: 780px) {
  .quick-start-top {
    flex-direction: column;
    align-items: stretch;
  }

  .scope-row .chapter-input {
    width: 100%;
  }

  .quick-compact {
    align-items: stretch;
  }

  .step-actions > button {
    width: 100%;
  }

  .controls-row {
    align-items: stretch;
  }

  .controls-row-primary .file-input,
  .controls-row-primary > button {
    width: 100%;
  }

  .controls-row-secondary {
    justify-content: flex-start;
    gap: 10px;
  }

  .mode-stack {
    width: 100%;
  }

  .mode-group {
    width: 100%;
  }

  .mode-subgroup {
    width: 100%;
    align-items: stretch;
  }

  .mode-subgroup > button {
    width: 100%;
  }

  .switch-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .mini-bar {
    top: 6px;
  }

  .mini-bar .ghost {
    margin-left: 0;
    width: 100%;
  }

  .db-row {
    align-items: stretch;
  }

  .db-input,
  .db-input.db-wide,
  .chapter-input,
  .db-row > button {
    width: 100%;
  }

  .db-meta {
    gap: 4px;
  }

  .write-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .board {
    min-width: 610px;
    gap: 24px;
    padding: 18px;
  }

  .column h2 {
    font-size: 1.55rem;
  }
}