:root {
  --color-bg: #0b0f14;
  --color-surface: #111827;
  --color-surface-muted: #1f2937;

  --color-text: #f8fafc;
  --color-text-muted: #cbd5e1;
  --color-text-light: #94a3b8;

  --color-border: #263241;
  --color-border-strong: #334155;

  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-primary-light: #1e3a8a;

  --color-secondary: #94a3b8;
  --color-secondary-hover: #cbd5e1;
  --color-secondary-light: #273449;

  --color-success: #22c55e;
  --color-success-light: #14532d;

  --color-warning: #fbbf24;
  --color-warning-light: #78350f;

  --color-danger: #ef4444;
  --color-danger-light: #7f1d1d;

  --color-info: #06b6d4;
  --color-info-light: #164e63;

  --color-input-bg: #111827;
  --color-input-border: #334155;
  --color-input-focus: #3b82f6;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.55);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  -webkit-font-smoothing: antialiased;
}

/* ── Card ─────────────────────────────────────────────── */
.login-wrapper {
  width: 100%;
  max-width: 420px;
}

.login-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2.25rem 2rem;
}

/* ── Header ───────────────────────────────────────────── */
.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
}

.login-logo svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
  stroke: var(--color-primary);
}

.login-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.login-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ── Alerts ───────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.alert ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.alert-danger {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid #fca5a5;
}

.alert-info {
  background: var(--color-info-light);
  color: var(--color-info);
  border: 1px solid #67e8f9;
}

/* ── Form ─────────────────────────────────────────────── */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.375rem;
  letter-spacing: 0.01em;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-text-light);
  stroke: var(--color-text-light);
  pointer-events: none;
  transition: stroke var(--transition-fast);
}

.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem 0.625rem 2.5rem;
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-input-bg);
  border: 1.5px solid var(--color-input-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--color-text-light);
}

.form-input:focus {
  border-color: var(--color-input-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-input:focus+.input-icon,
.input-wrapper:focus-within .input-icon {
  stroke: var(--color-primary);
}

/* ── Remember & forgot ────────────────────────────────── */
.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  margin-top: 0.25rem;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.checkbox-wrapper input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  user-select: none;
}

.forgot-link {
  font-size: 0.875rem;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.forgot-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ── Submit button ────────────────────────────────────── */
.btn-submit {
  width: 100%;
  padding: 0.6875rem 1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #ffffff;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-submit:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-submit:active {
  transform: translateY(1px);
  box-shadow: none;
}

/* ── Footer brand ─────────────────────────────────────── */
.login-brand {
  text-align: center;
  margin-top: 1.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-light);
}