:root {
  --ink: #111827;
  --muted: #64748b;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --line: #d6deea;
  --accent: #2156d9;
  --accent-dark: #183f9f;
  --success: #16845c;
  --gold: #b7791f;
  --wash: #edf4ff;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(33, 86, 217, 0.10), rgba(22, 132, 92, 0.08)),
    #f5f7fb;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  min-width: 0;
}

.btn {
  min-height: 44px;
  white-space: nowrap;
  font-weight: 700;
  border-radius: 8px;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 10px 22px rgba(33, 86, 217, 0.18);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

.btn-dark {
  background: #111827;
  border-color: #111827;
}

.btn-success {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 10px 22px rgba(22, 132, 92, 0.16);
}

.app-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(16px, 4vw, 40px) 0;
}

.workspace {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(216, 222, 233, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.topbar,
.handoff,
.result-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.topbar {
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(214, 222, 234, 0.82);
}

.topbar > div {
  min-width: 0;
}

.topbar h1,
.handoff h2,
.otp-card h2,
.mock-panel h1 {
  margin: 0;
  letter-spacing: 0;
}

.topbar h1 {
  font-size: clamp(1.55rem, 3vw, 2.6rem);
  font-weight: 800;
  line-height: 1.12;
  overflow-wrap: anywhere;
}

.kicker {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.premium-badge {
  color: #0f2f64;
  background: #eef4ff;
  border: 1px solid #c7d7fe;
  padding: 0.58rem 0.82rem;
}

.flow-grid {
  display: grid;
  grid-template-columns: minmax(240px, 280px) minmax(0, 1fr);
  gap: 24px;
}

.steps-panel,
.panel,
.otp-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.steps-panel {
  padding: 12px;
  align-self: start;
  position: sticky;
  top: 18px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.07);
}

.step {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  align-items: center;
  padding: 13px;
  border-radius: 8px;
  color: var(--muted);
  border: 1px solid transparent;
}

.step span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #eef2f7;
  color: var(--muted);
  font-weight: 700;
}

.step strong,
.step small {
  display: block;
  line-height: 1.25;
}

.step.active {
  color: var(--ink);
  background: linear-gradient(135deg, #f8fbff, var(--wash));
  border-color: #c7d7fe;
}

.step.active span {
  color: #fff;
  background: var(--accent);
}

.panel {
  padding: 24px;
  min-width: 0;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.07);
}

.form-control {
  border-color: #cbd5e1;
  border-radius: 8px;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.22rem rgba(33, 86, 217, 0.14);
}

.section-block + .section-block {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.result-strip {
  align-items: stretch;
  flex-wrap: wrap;
}

.result-strip > div {
  flex: 1 1 170px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.result-strip small,
.status-text {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
}

.result-strip strong {
  display: block;
  overflow-wrap: anywhere;
  margin-top: 4px;
  font-size: 1.02rem;
}

.otp-card {
  height: 100%;
  padding: 18px;
  min-width: 0;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
}

.otp-card .input-group {
  flex-wrap: nowrap;
}

.otp-card h2,
.handoff h2 {
  font-size: 1.05rem;
  font-weight: 750;
}

.status-text {
  margin-top: 10px;
}

.status-text.verified {
  color: var(--success);
  font-weight: 700;
}

.handoff {
  padding: 18px;
  border-radius: 8px;
  background: linear-gradient(135deg, #f2fbf7, #f8fbff);
  border: 1px solid rgba(22, 132, 92, 0.24);
}

.handoff p {
  margin: 6px 0 0;
  color: var(--muted);
  max-width: 56ch;
}

.handoff .btn {
  flex: 0 0 auto;
}

.mock-body {
  display: grid;
  place-items: center;
}

.mock-panel {
  width: min(520px, calc(100% - 32px));
  padding: 28px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

@media (max-width: 1024px) {
  .flow-grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 18px;
  }

  .steps-panel {
    padding: 10px;
  }

  .step {
    gap: 10px;
    padding: 10px;
  }
}

@media (max-width: 860px) {
  .app-shell {
    width: min(100% - 24px, 760px);
  }

  .workspace,
  .panel {
    padding: clamp(16px, 4vw, 22px);
  }

  .flow-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .steps-panel {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    position: static;
  }

  .step {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    min-height: 94px;
  }

  .step span {
    width: 32px;
    height: 32px;
  }

  .step small {
    font-size: 0.75rem;
  }

  .topbar,
  .handoff {
    align-items: flex-start;
    flex-direction: column;
  }

  .handoff .btn {
    width: 100%;
  }
}

@media (max-width: 575.98px) {
  body {
    background: #f5f7fb;
  }

  .app-shell {
    width: 100%;
    padding: 0;
  }

  .workspace {
    min-height: 100vh;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    padding: 16px;
  }

  .topbar {
    gap: 12px;
    margin-bottom: 18px;
  }

  .topbar .badge {
    align-self: flex-start;
  }

  .steps-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step {
    min-height: 84px;
    padding: 9px;
  }

  .panel {
    border: 0;
    border-radius: 0;
    padding: 0;
    background: transparent;
    box-shadow: none;
  }

  .section-block {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
  }

  .section-block + .section-block {
    margin-top: 14px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }

  .input-group,
  .input-group-lg {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .input-group > .form-control,
  .input-group > .btn,
  .input-group-lg > .form-control,
  .input-group-lg > .btn {
    width: 100%;
    border-radius: 0.5rem !important;
  }

  .result-strip {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .otp-card {
    padding: 16px;
  }

  .otp-card .d-flex {
    gap: 10px;
  }

  .otp-card .d-flex .btn {
    min-width: 86px;
  }
}

@media (max-width: 380px) {
  .workspace {
    padding: 12px;
  }

  .steps-panel {
    grid-template-columns: 1fr;
  }

  .step {
    grid-template-columns: 34px 1fr;
    justify-items: start;
    min-height: auto;
    text-align: left;
  }

  .section-block {
    padding: 14px;
  }

  .topbar h1 {
    font-size: 1.42rem;
  }
}