:root {
  --bg: #f5f6ff;
  --card-bg: #ffffff;
  --border: rgba(29,78,216,.12);
  --border-h: rgba(29,78,216,.28);
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-pale: rgba(37,99,235,.07);
  --primary-glow: rgba(37,99,235,.18);
  --text: #0c0a1e;
  --muted: #4b5563;
  --dim: #9ca3af;
  --otp-color: #059669;
  --otp-sep: #9ca3af;
  --shadow: 0 1px 4px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 8px rgba(0,0,0,.06), 0 16px 40px rgba(29,78,216,.1);
}

* { box-sizing: border-box; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
}

/* ---- NAVBAR ---- */
.smg-navbar {
  background: var(--primary-dark) !important;
  border-bottom: 1px solid rgba(255,255,255,.1);
  box-shadow: 0 1px 8px rgba(29,78,216,.25);
}

.smg-navbar .navbar-brand img {
  height: 28px;
  width: auto;
}

.smg-navbar .navbar-brand span {
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -.4px;
  color: #fff;
}

/* ---- LOGIN ---- */
.login-body {
  background: var(--bg);
  background-image:
    linear-gradient(rgba(29,78,216,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29,78,216,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border) !important;
  border-radius: 20px;
  box-shadow: var(--shadow-lg) !important;
  width: 100%;
  max-width: 420px;
  margin: 1rem;
}

.brand-icon { font-size: 2.4rem; }
.brand-title { color: var(--text); font-weight: 800; letter-spacing: -0.5px; }

/* ---- PORTAL ---- */
.portal-body { background: var(--bg); }

.card {
  background: var(--card-bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: 14px;
  box-shadow: var(--shadow) !important;
}

.mode-card {
  background: var(--primary-pale) !important;
  border: 1px solid var(--border-h) !important;
}

/* Inputs */
.form-control {
  background: #f9fafb !important;
  border: 1.5px solid var(--border) !important;
  color: var(--text) !important;
  border-radius: 8px !important;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-control:focus {
  background: #fff !important;
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px rgba(37,99,235,.12) !important;
  outline: none;
}
.form-control::placeholder { color: var(--dim) !important; }
.form-control-lg { min-height: 52px; font-size: 1.1rem; }

.font-mono { font-family: 'SF Mono', 'Fira Code', Consolas, monospace !important; }

.form-label { color: var(--text); font-weight: 600; }
.form-text { color: var(--muted) !important; font-size: 0.75rem; }

/* Buttons */
.btn-primary {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  border-radius: 8px !important;
  font-weight: 600;
  letter-spacing: 0.3px;
  min-height: 48px;
  box-shadow: 0 2px 12px var(--primary-glow);
}
.btn-primary:hover { background: var(--primary-dark) !important; border-color: var(--primary-dark) !important; }
.btn-primary:disabled { opacity: 0.6; }

.btn-outline-primary {
  border-color: var(--border-h) !important;
  color: var(--muted) !important;
  border-radius: 8px !important;
  font-weight: 500;
}
.btn-check:checked + .btn-outline-primary {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  color: #fff !important;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.btn-outline-warning {
  border-color: #d97706 !important;
  color: #d97706 !important;
  border-radius: 8px !important;
  font-weight: 500;
}
.btn-check:checked + .btn-outline-warning {
  background: #d97706 !important;
  border-color: #d97706 !important;
  color: #fff !important;
}

.btn-outline-light {
  border-color: rgba(255,255,255,.4) !important;
  color: rgba(255,255,255,.9) !important;
  border-radius: 6px !important;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,.15) !important;
  color: #fff !important;
}

.btn-outline-secondary {
  border-color: var(--border) !important;
  color: var(--muted) !important;
  border-radius: 6px !important;
}

/* OTP Result */
.result-card {
  background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%) !important;
  border: 1.5px solid rgba(5,150,105,.2) !important;
}

.otp-display {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: clamp(1.1rem, 4vw, 1.6rem);
  font-weight: 700;
  color: var(--otp-color);
  letter-spacing: 0.05em;
  word-break: break-all;
  line-height: 1.8;
}

.otp-group { color: var(--otp-color); }
.otp-sep { color: var(--otp-sep); font-weight: 300; }

/* Alert */
.alert-danger {
  background: #fef2f2 !important;
  border-color: #fecaca !important;
  color: #b91c1c !important;
  border-radius: 10px !important;
}

/* Scrollbar sottile */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-h); border-radius: 3px; }

/* Mobile tweaks */
@media (max-width: 576px) {
  .container { padding-left: 12px; padding-right: 12px; }
  .card-body { padding: 1rem 1rem !important; }
  .otp-display { font-size: 1rem; }
}