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

:root {
  --font-ui: "Hublot Sans", "Inter", "Segoe UI", Arial, sans-serif;
  --font-grid: "Hublot Sans", "Inter", "Segoe UI", Arial, sans-serif;
  --radix-blue: #215dff;
  --radix-cyan: #1cc9ff;
  --radix-violet: #6f66ff;
  --bg: #eaf1ff;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-soft: #f3f8ff;
  --text: #0c1329;
  --muted: #516485;
  --border: rgba(138, 171, 245, 0.45);
  --green: #2fbe6e;
  --yellow: #f3bc3d;
  --gray: #7c8db0;
  --brand-correct-a: #215dff;
  --brand-correct-b: #1cc9ff;
  --brand-present-a: #6f66ff;
  --brand-present-b: #8f86ff;
  --brand-absent-a: #9aaad0;
  --brand-absent-b: #7b8cb8;
  --shadow-xl: 0 34px 80px rgba(16, 38, 89, 0.2);
  --shadow-lg: 0 18px 42px rgba(19, 50, 121, 0.16);
  --shadow-md: 0 8px 20px rgba(35, 76, 168, 0.12);
  --grad: linear-gradient(120deg, #215dff 0%, #6f66ff 52%, #1cc9ff 100%);
}

* {
  box-sizing: border-box;
}

html,
body {
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(1100px 560px at -8% -14%, rgba(33, 93, 255, 0.33), transparent 63%),
    radial-gradient(920px 540px at 108% -20%, rgba(28, 201, 255, 0.24), transparent 56%),
    radial-gradient(840px 460px at 52% 124%, rgba(111, 102, 255, 0.22), transparent 60%),
    var(--bg);
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
  filter: blur(8px);
}

body::before {
  width: 46vmax;
  height: 46vmax;
  top: -18vmax;
  right: -16vmax;
  border-radius: 41% 59% 63% 37% / 51% 42% 58% 49%;
  background: linear-gradient(130deg, rgba(28, 201, 255, 0.28), rgba(111, 102, 255, 0.3));
  animation: floatBlobA 13s ease-in-out infinite alternate;
}

body::after {
  width: 42vmax;
  height: 42vmax;
  left: -18vmax;
  bottom: -20vmax;
  border-radius: 61% 39% 32% 68% / 46% 61% 39% 54%;
  background: linear-gradient(130deg, rgba(33, 93, 255, 0.22), rgba(28, 201, 255, 0.22));
  animation: floatBlobB 16s ease-in-out infinite alternate;
}

button,
input,
select,
textarea {
  font-family: var(--font-ui);
}

.app-shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 16px 40px;
  position: relative;
}

.app-shell::before {
  content: "";
  position: absolute;
  inset: 6px;
  z-index: -1;
  border-radius: 28px;
  background:
    linear-gradient(transparent 98%, rgba(72, 115, 212, 0.1) 98%),
    linear-gradient(90deg, transparent 98%, rgba(72, 115, 212, 0.1) 98%);
  background-size: 22px 22px;
  opacity: 0.35;
  mask-image: radial-gradient(circle at 50% 50%, black 48%, transparent 100%);
}

.brand-header {
  text-align: center;
  margin-bottom: 22px;
  padding: 14px 14px 6px;
  animation: riseIn 500ms ease;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 10px;
}

.brand-mark {
  width: min(184px, 46vw);
  height: auto;
  display: block;
  filter: drop-shadow(0 5px 12px rgba(24, 75, 197, 0.18));
}

.brand-header h1 {
  margin: 0;
  font-family: "Unbounded", "Hublot Sans", "Inter", sans-serif;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1;
  letter-spacing: 0.03em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 10px 24px rgba(32, 95, 255, 0.12);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.panel {
  border: 1px solid var(--border);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(244, 249, 255, 0.86));
  border-radius: 24px;
  padding: 22px;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(125deg, rgba(33, 93, 255, 0.08), transparent 38%, rgba(28, 201, 255, 0.08));
}

.hidden {
  display: none !important;
}

.auth-card,
.login-card {
  max-width: 500px;
  margin: 8px auto;
  display: grid;
  gap: 12px;
  animation: riseIn 450ms ease;
}

.auth-card input,
.login-card input {
  width: 100%;
  border: 1px solid #b7c9f5;
  background: #f8fbff;
  border-radius: 14px;
  padding: 12px;
  font-size: 16px;
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

button {
  border: none;
  background: var(--grad);
  color: white;
  padding: 11px 14px;
  border-radius: 12px;
  font-weight: 400;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 150ms ease, box-shadow 150ms ease, filter 150ms ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

button:active {
  transform: translateY(0);
}

.ghost-btn,
.secondary-btn {
  background: #f5f9ff;
  color: var(--radix-blue);
  border: 1px solid #bdd0ff;
  box-shadow: none;
}

.session-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 12px;
  align-items: end;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid #d8e4ff;
  border-radius: 16px;
  padding: 12px;
}

.label {
  margin: 0;
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.value {
  margin: 3px 0 0;
  font-weight: 800;
}

.theme-select {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.game-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 18px 0 14px;
  color: var(--muted);
}

.game-meta p {
  margin: 0;
  background: rgba(247, 251, 255, 0.95);
  border: 1px solid #d6e3ff;
  border-radius: 12px;
  padding: 10px;
}

#themeLabel,
#roundPoints,
#timerLabel {
  color: #1d4ef8;
}

.board {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  margin-bottom: 2px;
}

.row {
  display: grid;
  grid-template-columns: repeat(5, 54px);
  gap: 8px;
  justify-content: center;
}

.cell {
  width: 54px;
  height: 54px;
  border-radius: 13px;
  border: 2px solid #c6d8ff;
  display: grid;
  place-items: center;
  font-size: 24px;
  font-weight: 800;
  font-family: var(--font-grid);
  text-transform: uppercase;
  background: linear-gradient(180deg, #ffffff, #f4f8ff);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: transform 120ms ease, border-color 120ms ease;
}

.cell.filled {
  border-color: #89a5ea;
  transform: translateY(-1px);
}

.cell.correct {
  border-color: transparent;
  background: linear-gradient(155deg, var(--brand-correct-a), var(--brand-correct-b));
  color: white;
}

.cell.present {
  border-color: transparent;
  background: linear-gradient(155deg, var(--brand-present-a), var(--brand-present-b));
  color: #ffffff;
}

.cell.absent {
  border-color: transparent;
  background: linear-gradient(155deg, var(--brand-absent-a), var(--brand-absent-b));
  color: white;
}

.keyboard {
  margin-top: 18px;
  display: grid;
  gap: 8px;
}

.key-row {
  display: flex;
  justify-content: center;
  gap: 6px;
}

.key {
  min-width: 48px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 400;
  text-align: center;
  background: linear-gradient(180deg, #eaf1ff, #dce8ff);
  border: 1px solid #bfd3ff;
  color: #102453;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.key.wide {
  min-width: 72px;
}

.key.correct {
  background: linear-gradient(155deg, var(--brand-correct-a), var(--brand-correct-b));
  border-color: #2b82ff;
  color: #fff;
}

.key.present {
  background: linear-gradient(155deg, var(--brand-present-a), var(--brand-present-b));
  border-color: #7f76ff;
  color: #fff;
}

.key.absent {
  background: linear-gradient(155deg, var(--brand-absent-a), var(--brand-absent-b));
  border-color: #899ac3;
  color: #fff;
}

.answer-reveal {
  margin: 8px 0 2px;
  text-align: center;
  font-weight: 700;
  color: #2347a8;
}

.feedback {
  min-height: 24px;
  margin: 14px 0 10px;
  color: #2f4b84;
  font-weight: 700;
}

.small {
  font-size: 15px;
  color: var(--muted);
}

@keyframes riseIn {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes floatBlobA {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(-18px, 24px, 0) scale(1.04);
  }
}

@keyframes floatBlobB {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(20px, -18px, 0) scale(1.06);
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding-top: 22px;
  }

  .session-row,
  .game-meta {
    grid-template-columns: 1fr;
  }

  .brand-row {
    gap: 10px;
  }

  .brand-mark {
    width: min(134px, 42vw);
  }

  .brand-header h1 {
    font-size: clamp(22px, 7vw, 34px);
  }

  .panel {
    border-radius: 20px;
    padding: 16px;
  }

  .row {
    grid-template-columns: repeat(5, 46px);
    gap: 6px;
  }

  .cell {
    width: 46px;
    height: 46px;
    font-size: 21px;
    border-radius: 11px;
  }

  .key {
    min-width: 38px;
    padding: 10px 8px;
    font-size: 13px;
    border-radius: 9px;
  }

  .key.wide {
    min-width: 58px;
  }
}

.reset-note {
  margin: 14px 0 0;
  text-align: center;
  color: #3557ac;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 19, 41, 0.42);
  display: grid;
  place-items: center;
  z-index: 1000;
  padding: 16px;
}

.modal-card {
  width: min(460px, 94vw);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.98), rgba(242, 248, 255, 0.96));
  border: 1px solid #c9d9ff;
  border-radius: 18px;
  box-shadow: 0 26px 56px rgba(12, 35, 90, 0.25);
  padding: 20px;
  text-align: center;
}

.modal-card h2 {
  margin: 0 0 8px;
  color: #1f53f7;
}

.modal-card p {
  margin: 0 0 16px;
}

.legend {
  margin: 14px auto 4px;
  max-width: 460px;
  display: grid;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid #d3e2ff;
  border-radius: 12px;
  background: rgba(250, 253, 255, 0.92);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #28437f;
  font-size: 13px;
}

.legend-chip {
  width: 16px;
  height: 16px;
  border-radius: 5px;
  flex: 0 0 16px;
  border: 1px solid rgba(21, 46, 111, 0.16);
}

.legend-chip.correct {
  background: linear-gradient(155deg, var(--brand-correct-a), var(--brand-correct-b));
}

.legend-chip.present {
  background: linear-gradient(155deg, var(--brand-present-a), var(--brand-present-b));
}

.legend-chip.absent {
  background: linear-gradient(155deg, var(--brand-absent-a), var(--brand-absent-b));
}

@media (max-width: 720px) {
  .legend {
    margin-top: 12px;
    padding: 9px 10px;
  }

  .legend-item {
    font-size: 12px;
  }
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 16px;
  align-items: start;
}

.game-main {
  min-width: 0;
}

.legend-side {
  margin: 10px 0 0;
  position: sticky;
  top: 10px;
}

@media (max-width: 980px) {
  .game-layout {
    grid-template-columns: 1fr;
  }

  .legend-side {
    position: static;
    margin-top: 10px;
    max-width: 100%;
  }
}

.top-tabs {
  margin-top: 14px;
  display: flex;
  gap: 8px;
}

.tab-btn {
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid #c1d3ff;
  background: #f3f8ff;
  color: #2950b5;
  box-shadow: none;
}

.tab-btn.active {
  background: linear-gradient(120deg, #215dff 0%, #6f66ff 52%, #1cc9ff 100%);
  border-color: transparent;
  color: #fff;
}

.leaderboard-card {
  margin-top: 14px;
  border: 1px solid #d6e3ff;
  border-radius: 14px;
  padding: 12px;
  background: rgba(250, 253, 255, 0.92);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 10px 8px;
  border-bottom: 1px solid #e4edff;
  text-align: left;
}

.leaderboard-table th {
  color: #3355a7;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.leaderboard-table tbody tr.current-user {
  background: rgba(33, 93, 255, 0.08);
}

@media (max-width: 720px) {
  .top-tabs {
    flex-wrap: wrap;
  }

  .leaderboard-table {
    font-size: 13px;
  }
}

.auth-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  padding: 8px;
  align-items: stretch;
}

.auth-intro {
  border: 1px solid #d6e3ff;
  border-radius: 16px;
  padding: 18px;
  background:
    radial-gradient(560px 260px at 8% -12%, rgba(33, 93, 255, 0.16), transparent 55%),
    radial-gradient(520px 240px at 100% 100%, rgba(28, 201, 255, 0.12), transparent 62%),
    rgba(250, 253, 255, 0.92);
}

.auth-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #3a62d1;
  font-weight: 700;
}

.auth-intro h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.18;
  color: #13234f;
}

.auth-intro .small {
  margin: 0;
  color: #3f5689;
}

.intro-points {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.intro-point {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: center;
  font-size: 14px;
  color: #2e467d;
}

.intro-point strong {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  background: linear-gradient(130deg, #215dff, #1cc9ff);
}

.auth-form-card {
  border: 1px solid #d6e3ff;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  padding: 18px;
  display: grid;
  gap: 10px;
}

.auth-form-card h3 {
  margin: 0;
  color: #152650;
  font-size: 24px;
}

.auth-form-card .small {
  margin: 0;
  color: #546a97;
}

.auth-form-card input {
  width: 100%;
  border: 1px solid #b7c9f5;
  background: #f8fbff;
  border-radius: 14px;
  padding: 12px;
  font-size: 16px;
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

@media (max-width: 980px) {
  .auth-hero {
    grid-template-columns: 1fr;
    padding: 0;
  }

  .auth-intro,
  .auth-form-card {
    padding: 14px;
  }

  .auth-form-card h3 {
    font-size: 22px;
  }
}

.brand-divider {
  color: #5f77ba;
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 400;
  line-height: 1;
}

/* Mobile responsiveness hardening */
.leaderboard-card {
  overflow-x: auto;
}

.leaderboard-table th,
.leaderboard-table td {
  white-space: nowrap;
}

@media (max-width: 900px) {
  .app-shell {
    padding: 18px 12px 28px;
  }

  .panel {
    padding: 14px;
    border-radius: 18px;
  }

  .brand-row {
    gap: 8px;
  }

  .brand-mark {
    width: min(120px, 38vw);
  }

  .brand-divider {
    font-size: clamp(16px, 3.8vw, 24px);
  }

  .brand-header h1 {
    font-size: clamp(18px, 6vw, 28px);
  }

  .subtitle {
    font-size: 13px;
  }

  .row {
    grid-template-columns: repeat(5, 42px);
    gap: 5px;
  }

  .cell {
    width: 42px;
    height: 42px;
    font-size: 18px;
    border-radius: 9px;
  }

  .key-row {
    gap: 4px;
  }

  .key {
    min-width: 30px;
    padding: 9px 6px;
    font-size: 12px;
    border-radius: 8px;
  }

  .key.wide {
    min-width: 50px;
  }

  .top-tabs {
    gap: 6px;
  }

  .tab-btn {
    padding: 8px 12px;
    font-size: 13px;
  }

  .auth-intro h2 {
    font-size: 26px;
  }
}

@media (max-width: 560px) {
  .brand-row {
    flex-wrap: wrap;
  }

  .session-row {
    gap: 8px;
    padding: 10px;
  }

  .game-meta p {
    padding: 8px;
    font-size: 13px;
  }

  .row {
    grid-template-columns: repeat(5, 38px);
    gap: 4px;
  }

  .cell {
    width: 38px;
    height: 38px;
    font-size: 16px;
    border-radius: 8px;
  }

  .key {
    min-width: 27px;
    padding: 8px 4px;
    font-size: 11px;
  }

  .key.wide {
    min-width: 44px;
  }

  .legend {
    padding: 8px;
  }

  .legend-item {
    font-size: 11px;
    gap: 8px;
  }

  .auth-form-card h3 {
    font-size: 20px;
  }

  .auth-form-card input {
    font-size: 15px;
    padding: 10px;
  }

  .reset-note {
    font-size: 12px;
  }
}