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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --border: #2a2d3a;
  --accent: #7c6af7;
  --accent-glow: rgba(124, 106, 247, 0.25);
  --text: #e8e9f0;
  --muted: #6b7280;
  --error: #f87171;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: -20%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(124, 106, 247, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(99, 179, 237, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}

.logo-sub {
  font-size: 11px;
  color: var(--muted);
  font-weight: 400;
  margin-top: 1px;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.subtitle {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
}

.field {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #c4c7d4;
  margin-bottom: 6px;
}

input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

input::placeholder {
  color: var(--muted);
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.field-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.forgot {
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  opacity: 0.9;
  transition: opacity 0.15s;
}

.forgot:hover {
  opacity: 1;
}

.error-msg {
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.2);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--error);
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
}

.error-msg.visible {
  display: flex;
}

.btn {
  width: 100%;
  padding: 11px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
  transition: opacity 0.15s, transform 0.1s;
  font-family: inherit;
  letter-spacing: 0.1px;
  position: relative;
  overflow: hidden;
}

.btn:hover {
  opacity: 0.92;
}

.btn:active {
  transform: scale(0.99);
}

.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn.loading .btn-text {
  opacity: 0;
}

.btn.loading .spinner {
  display: block;
}

.spinner {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.divider span {
  font-size: 12px;
  color: var(--muted);
}

.sso-btn {
  width: 100%;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s, border-color 0.15s;
  font-family: inherit;
}

.sso-btn:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: #3a3d4a;
}

.footer {
  margin-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

.shake {
  animation: shake 0.4s ease;
}