:root {
  --bg-primary: #070a12;
  --bg-surface: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: #38bdf8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.35);
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --radius-lg: 16px;
  --radius-md: 10px;
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow-x: hidden;
  padding: 1.5rem;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.18) 0%, transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(56, 189, 248, 0.1) 0%, transparent 50%),
    linear-gradient(180deg, #070a12 0%, #0b1120 100%);
}

/* Background animated grid lines */
.bg-mesh {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  pointer-events: none;
  z-index: 1;
}

.auth-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 440px;
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  box-shadow: 
    0 20px 40px -15px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #38bdf8, #2563eb, #818cf8);
}

.brand-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 2rem;
}

.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  box-shadow: 0 0 20px var(--accent-glow);
}

.brand-icon svg {
  width: 30px;
  height: 30px;
}

.brand-domain {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(56, 189, 248, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  border: 1px solid rgba(56, 189, 248, 0.2);
  margin-bottom: 0.5rem;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
  display: inline-block;
}

h1.portal-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

p.portal-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.form-group {
  margin-bottom: 1.25rem;
  position: relative;
}

label.field-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.label-hint {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 400;
}

.input-container {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 0.95rem;
  color: var(--text-dim);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.input-icon svg {
  width: 17px;
  height: 17px;
}

input.form-input {
  width: 100%;
  background: rgba(11, 17, 32, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 0.78rem 0.95rem 0.78rem 2.65rem;
  font-family: var(--font-main);
  font-size: 0.92rem;
  color: var(--text-main);
  transition: all 0.2s ease;
}

input.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
  background: rgba(15, 23, 42, 0.95);
}

input.totp-input {
  letter-spacing: 0.3em;
  font-size: 1.15rem;
  text-align: center;
  font-family: var(--font-mono);
  padding-left: 0.95rem;
  color: #38bdf8;
  font-weight: 600;
}

.btn-submit {
  width: 100%;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  margin-top: 1rem;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.35);
}

.btn-submit:hover:not(:disabled) {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.alert-box {
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.83rem;
  line-height: 1.45;
  display: none;
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.alert-danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fcd34d;
}

.alert-info {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
}

.card-footer {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  text-align: center;
}

.security-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-size: 0.74rem;
  color: var(--text-dim);
}

.security-badge svg {
  width: 14px;
  height: 14px;
  color: var(--accent);
}

.dev-hint {
  font-size: 0.72rem;
  color: #64748b;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  border: 1px dashed rgba(255, 255, 255, 0.08);
}