:root {
  --deep: #043d4b;
  --ocean: #007f92;
  --turquoise: #12b8b0;
  --aqua: #dff9f7;
  --foam: #f5ffff;
  --white: #ffffff;
  --ink: #12343b;
  --muted: #5c7479;
  --border: rgba(0, 127, 146, 0.16);
  --danger: #c53b4b;
  --success: #16834f;
  --neutral: #667b80;
  --shadow: 0 18px 50px rgba(4, 61, 75, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: linear-gradient(180deg, #e8fbfb 0%, #f8ffff 65%, #dff5f7 100%);
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.hidden {
  display: none !important;
}

.participant-shell,
.admin-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 60px;
}

.participant-shell {
  max-width: 780px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 24px 42px;
  margin-bottom: -18px;
  color: var(--white);
  text-align: center;
  border-radius: 28px 28px 10px 10px;
  background:
    radial-gradient(circle at 15% 15%, rgba(255,255,255,.23), transparent 23%),
    linear-gradient(135deg, var(--deep), var(--ocean) 55%, var(--turquoise));
  box-shadow: var(--shadow);
}

.hero h1,
.dashboard-header h1,
.admin-login-card h1 {
  margin: 4px 0 6px;
  font-size: clamp(2.2rem, 6vw, 4rem);
  letter-spacing: -0.04em;
}

.subtitle {
  margin: 0;
  opacity: 0.92;
}

.eyebrow,
.small-label {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.bubble {
  position: absolute;
  border: 2px solid rgba(255,255,255,.32);
  border-radius: 999px;
}

.bubble-one {
  width: 84px;
  height: 84px;
  top: -20px;
  right: 24px;
}

.bubble-two {
  width: 32px;
  height: 32px;
  bottom: 24px;
  left: 34px;
}

.card {
  position: relative;
  background: rgba(255,255,255,.96);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.registration-card,
.admin-login-card {
  padding: 30px;
}

.registration-card {
  z-index: 2;
}

.card h2 {
  margin-top: 0;
}

label {
  display: block;
  margin: 18px 0 8px;
  font-weight: 800;
}

input,
select {
  width: 100%;
  border: 1px solid rgba(0,127,146,.25);
  border-radius: 13px;
  padding: 14px 15px;
  color: var(--ink);
  background: var(--white);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--turquoise);
  box-shadow: 0 0 0 4px rgba(18,184,176,.14);
}

.primary-button,
.danger-button,
.timer-button {
  border: 0;
  border-radius: 14px;
  padding: 14px 18px;
  font-weight: 900;
  color: var(--white);
  transition: transform .15s ease, filter .15s ease;
}

.primary-button {
  width: 100%;
  margin-top: 18px;
  background: linear-gradient(135deg, var(--ocean), var(--turquoise));
}

.primary-button:hover,
.danger-button:hover,
.timer-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.error-message {
  min-height: 1.3em;
  margin-bottom: 0;
  color: var(--danger);
  font-weight: 700;
}

.identity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 30px 4px 14px;
}

.identity-row strong {
  display: block;
  margin-top: 4px;
  font-size: 1.5rem;
}

.text-button {
  border: 0;
  padding: 8px;
  color: var(--ocean);
  background: transparent;
  font-weight: 800;
}

.safety-banner {
  padding: 15px 17px;
  margin-bottom: 16px;
  border-radius: 15px;
  color: var(--deep);
  background: rgba(18,184,176,.14);
  border: 1px solid rgba(18,184,176,.28);
  font-weight: 700;
  line-height: 1.45;
}

.timers-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.timer-card {
  padding: 23px;
  text-align: center;
}

.timer-card h2 {
  margin-bottom: 12px;
  color: var(--ocean);
}

.timer-display {
  margin: 10px 0 20px;
  color: var(--deep);
  font-size: clamp(2.4rem, 10vw, 4.3rem);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.05em;
}

.timer-button {
  width: 100%;
  background: linear-gradient(135deg, var(--ocean), var(--turquoise));
}

.timer-button.running {
  background: linear-gradient(135deg, #a7293b, #dd5362);
}

.personal-summary {
  padding: 22px;
  margin-top: 16px;
}

.mini-chart,
.large-chart {
  display: flex;
  align-items: end;
  gap: 14px;
  min-height: 190px;
  padding: 18px 8px 4px;
}

.large-chart {
  min-height: 270px;
}

.chart-column {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  justify-content: end;
  gap: 8px;
  height: 190px;
}

.large-chart .chart-column {
  height: 250px;
}

.chart-value {
  font-size: .82rem;
  color: var(--muted);
  font-weight: 800;
  white-space: nowrap;
}

.chart-evolution {
  min-height: 1.35em;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 900;
  line-height: 1.2;
  white-space: nowrap;
}

.chart-evolution.positive {
  color: var(--success);
  background: rgba(22, 131, 79, .11);
}

.chart-evolution.negative {
  color: var(--danger);
  background: rgba(197, 59, 75, .11);
}

.chart-evolution.neutral {
  color: var(--neutral);
  background: rgba(102, 123, 128, .11);
}

.chart-evolution-empty {
  visibility: hidden;
}

.chart-bar {
  width: min(58px, 78%);
  min-height: 4px;
  border-radius: 12px 12px 4px 4px;
  background: linear-gradient(180deg, var(--turquoise), var(--ocean));
  transition: height .35s ease;
}

.chart-label {
  color: var(--deep);
  font-size: .82rem;
  font-weight: 900;
  text-align: center;
}

.admin-body {
  background:
    radial-gradient(circle at top left, rgba(18,184,176,.16), transparent 28%),
    #edfafa;
}

.admin-login-card {
  width: min(460px, 100%);
  margin: 12vh auto 0;
}

.dashboard-header,
.section-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.dashboard-header {
  margin-bottom: 22px;
}

.dashboard-header h1 {
  margin: 0;
  color: var(--deep);
}

.danger-button {
  background: var(--danger);
}

.dashboard-top-grid {
  display: grid;
  grid-template-columns: 260px 220px minmax(0, 1fr);
  gap: 18px;
}

.qr-card,
.count-card,
.average-card,
.individual-card,
.table-card {
  padding: 22px;
}

.qr-card img {
  display: block;
  width: min(100%, 210px);
  margin: 12px auto;
  border-radius: 12px;
}

.public-url {
  overflow-wrap: anywhere;
  color: var(--ocean);
  font-weight: 800;
  text-align: center;
}

.count-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.count-card strong {
  display: block;
  margin: 8px 0;
  color: var(--ocean);
  font-size: 5rem;
  line-height: 1;
}

.individual-card,
.table-card {
  margin-top: 18px;
}

.section-heading-row select {
  width: min(320px, 100%);
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

th:first-child,
td:first-child {
  text-align: left;
}

th {
  color: var(--deep);
  font-size: .8rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.running-cell {
  color: var(--danger);
  font-weight: 900;
}

.empty-state {
  padding: 34px 10px;
  color: var(--muted);
  text-align: center !important;
}

@media (max-width: 900px) {
  .dashboard-top-grid {
    grid-template-columns: 1fr 1fr;
  }

  .average-card {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .participant-shell,
  .admin-shell {
    width: min(100% - 18px, 1180px);
    padding-top: 10px;
  }

  .timers-grid,
  .dashboard-top-grid {
    grid-template-columns: 1fr;
  }

  .average-card {
    grid-column: auto;
  }

  .dashboard-header,
  .section-heading-row {
    align-items: stretch;
    flex-direction: column;
  }

  .dashboard-header .danger-button,
  .section-heading-row select {
    width: 100%;
  }

  .timer-card {
    padding: 19px;
  }

  .timer-display {
    font-size: 3.4rem;
  }
}