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

:root {
  --bg-deep:     #080b12;
  --bg-card:     #0e1320;
  --bg-input:    #151c2e;
  --border:      #1e2d4a;
  --border-glow: #2563eb55;
  --accent:      #3b82f6;
  --accent-2:    #6366f1;
  --accent-glow: rgba(59,130,246,.18);
  --text-primary: #e2e8f0;
  --text-muted:   #64748b;
  --text-dim:     #94a3b8;
  --danger:       #ef4444;
  --danger-bg:    rgba(239,68,68,.1);
  --success:      #10b981;
}

html, body {
  height: 100%;
  font-family: 'Inter', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow: hidden;
}

/* ── Animated background grid ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridShift 25s linear infinite;
  pointer-events: none;
  z-index: 0;
}
@keyframes gridShift {
  0%   { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

/* ── Radial glows ── */
.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 12s ease-in-out infinite;
}
.glow-orb.one {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,130,246,.12), transparent 70%);
  top: -150px; left: -150px;
}
.glow-orb.two {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(99,102,241,.10), transparent 70%);
  bottom: -120px; right: -120px;
  animation-delay: -6s;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  50%       { transform: translate(30px, 20px); }
}

/* ── Layout ── */
.page {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

/* ── Brand mark ── */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}
.brand-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(59,130,246,.35);
}
.brand-icon svg {
  width: 24px; height: 24px;
  fill: none;
  stroke: #fff;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--text-primary), var(--text-dim));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-tagline {
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-muted);
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ── Card ── */
.card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px;
  box-shadow:
    0 0 0 1px rgba(59,130,246,.04),
    0 24px 64px rgba(0,0,0,.5),
    inset 0 1px 0 rgba(255,255,255,.04);
  animation: cardIn .4s cubic-bezier(.16,1,.3,1);
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
}
.card-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ── Form ── */
.field {
  margin-bottom: 18px;
}
label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.input-wrap {
  position: relative;
}
.input-wrap .input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
input[type="text"],
input[type="password"] {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px 12px 42px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
input::placeholder { color: var(--text-muted); }

/* show/hide password toggle */
.toggle-pw {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color .2s;
}
.toggle-pw:hover { color: var(--text-dim); }

/* ── Error message ── */
.error-msg {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--danger-bg);
  border: 1px solid rgba(239,68,68,.25);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--danger);
  margin-bottom: 20px;
  animation: shakeIn .35s cubic-bezier(.36,.07,.19,.97);
}
.error-msg.visible { display: flex; }
@keyframes shakeIn {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

/* ── Submit button ── */
.btn-login {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 10px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: opacity .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 4px 20px rgba(59,130,246,.3);
  margin-top: 4px;
}
.btn-login:hover {
  opacity: .92;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(59,130,246,.4);
}
.btn-login:active { transform: translateY(0); }
.btn-login:disabled {
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}
.btn-login .btn-text { transition: opacity .2s; }
.btn-login .spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.btn-login.loading .btn-text { opacity: 0; }
.btn-login.loading .spinner { display: block; }
@keyframes spin { to { transform: translate(-50%,-50%) rotate(360deg); } }

/* ── Footer ── */
.login-footer {
  margin-top: 28px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}
.login-footer span {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  margin-right: 6px;
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: .4; }
}