/* ── Variables ── */
:root {
  --white: #ffffff;
  /* --blue: #1a56db; */
  --blue-light: #3b82f6;
  --blue-pale: #eff6ff;
  --accent: #0ea5e9;
  --text: #1e293b;
  --muted: #64748b;
  --border: #cbd5e1;
  --success: #16a34a;
  --danger: #dc2626;
  --radius: 16px;

  /* Primary Blues */
  --blue-dark: #1E3A8A;
  --blue-primary: #405b9c;
  --blue-accent: #6e96c7;

  /* Light Backgrounds */
  --blue-light: #DBEAFE;
  --blue-very-light: #F0F7FF;

  /* Text */
  --text-dark: #0F172A;
  --text-medium: #334155;
  --text-light: #E0ECFF;

  /* Base */
  --white: #FFFFFF;

  /* Shadows */
  --shadow-soft: 0 6px 18px rgba(37, 99, 235, 0.15);
  --shadow-medium: 0 12px 28px rgba(37, 99, 235, 0.25);

  /* Borders */
  --border-light: 1px solid var(--blue-light);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100vh;
  font-family: 'Funnel Display', sans-serif;
  color: var(--text);
  background: #e8f4fd;
}

/* ── .background ── */
.background {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 70% 55% at 15% 0%, rgba(14, 165, 233, 0.14) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 100%, rgba(26, 86, 219, 0.11) 0%, transparent 55%),
}

/* ── .navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(203, 213, 225, 0.7);
  padding: 0 2rem;
}

/* ── .auth-card ── */
.auth-card {
  max-width: 500px;
  width: 90%;
  margin: 7vh auto 4rem;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(203, 213, 225, 0.65);
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(30, 80, 180, 0.10);
  overflow: hidden;
}


/* ── .tabs / .tab-btn ── */
.tabs {
  display: flex;
}

.tab-btn {
  flex: 1;
  padding: 1rem;
  background: none;
  border: none;
  border-bottom: 2.5px solid transparent;
  margin-bottom: -1px;
  font-family: 'Funnel Display', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.tab-btn:hover {
  color: var(--blue-primary);
  background: var(--blue-pale);
}


/* ── .tab-panel ── */
.tab-panel {
  display: none;
  padding: 2rem 2.4rem 2.4rem;
}

.tab-panel.active {
  display: block;
}

/* ── .panel-title / .panel-sub ── */
.panel-title {
  font-family: 'Funnel Display', sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.panel-sub {
  font-size: 0.87rem;
  color: var(--muted);
  margin-bottom: 1.6rem;
}

/* ── .form-section ── */
.form-section {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-light);
  border-bottom: 1px solid #e2eaf7;
  padding-bottom: 0.4rem;
  margin: 1.4rem 0 1rem;
}

/* ── .field / .field-row ── */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.38rem;
  margin-bottom: 1rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.field-row .field {
  margin-bottom: 1rem;
}

/* ── label ── */
label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── .input-wrap ── */
.input-wrap {
  position: relative;
}

/* ── inputs ── */
input[type="text"],
input[type="password"],
input[type="email"] {
  width: 100%;
  padding: 0.72rem 0.95rem;
  background: #f8fafc;
  border: 1.5px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-family: 'Funnel Display', sans-serif;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input::placeholder {
  color: #b0bec5;
}

input:focus {
  border-color: var(--blue-light);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

/* ── .toggle-pw ── */
.toggle-pw {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0;
}

.toggle-pw:hover {
  color: var(--blue-primary);
}

.has-toggle {
  padding-right: 2.5rem;
}

/* ── .pw-rules ── */
.pw-rules {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem 1rem;
  margin-top: 0.7rem;
}

.pw-rules li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.79rem;
  color: var(--muted);
  transition: color 0.25s;
}

.rule-icon {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  flex-shrink: 0;
  transition: background 0.25s, border-color 0.25s;
}

.pw-rules li.met {
  color: var(--success);
}

.pw-rules li.met .rule-icon {
  background: var(--success);
  border-color: var(--success);
  color: var(--white);
}

/* ── .field-hint ── */
.field-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.field-hint.error {
  color: var(--danger);
}

.field-hint.ok {
  color: var(--success);
}

/* ── .check-label ── */
.check-label {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.84rem;
  color: var(--muted);
  cursor: pointer;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.check-label input[type="checkbox"] {
  width: 17px;
  height: 17px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--blue-primary);
  cursor: pointer;
}

.check-label a {
  color: var(--blue-primary);
  text-decoration: none;
  font-weight: 500;
}

.check-label a:hover {
  text-decoration: underline;
}

/* ── .btn-submit ── */
.btn-submit {
  width: 100%;
  padding: 0.85rem;
  border: none;
  border-radius: 9px;
  font-family: 'Funnel Display', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue-primary) 0%, #1248c0 100%);
  box-shadow: 0 4px 18px rgba(26, 86, 219, 0.28);
  transition: transform 0.15s, box-shadow 0.2s;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(26, 86, 219, 0.36);
}

.btn-submit:active {
  transform: translateY(0);
}

/* ── .switch-hint ── */
.switch-hint {
  margin-top: 1.2rem;
  text-align: center;
  font-size: 0.84rem;
  color: var(--muted);
}

.switch-hint a {
  color: var(--blue-primary);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.switch-hint a:hover {
  text-decoration: underline;
}

/* ── Responsive ── */
@media (max-width: 540px) {
  .auth-card {
    margin: 3vh 1rem 2rem;
  }

  .tab-panel {
    padding: 1.5rem 1.2rem 2rem;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .pw-rules {
    grid-template-columns: 1fr;
  }
}