:root {
  --mk-primary: #0F766E;
  --mk-primary-dark: #0B4F4A;
  --mk-secondary: #F4EFE7;
  --mk-accent: #D9A441;
  --mk-bg: #FAFAF7;
  --mk-surface: #FFFFFF;
  --mk-text: #1F2933;
  --mk-muted: #6B7280;
  --mk-border: #E5E7EB;
}

* { box-sizing: border-box; }
html { font-family: Inter, ui-sans-serif, system-ui, sans-serif; }
body { margin: 0; }

.mk-auth-shell {
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(217, 164, 65, 0.12), transparent 32rem),
    var(--mk-bg);
}
.dark .mk-auth-shell {
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.16), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(217, 164, 65, 0.10), transparent 32rem),
    #020617;
}

.mk-card {
  border: 1px solid rgba(229, 231, 235, 0.92);
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(16px);
}
.dark .mk-card {
  border-color: rgba(30, 41, 59, 0.95);
  background: rgba(15, 23, 42, 0.92);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.mk-card-flat {
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}
.dark .mk-card-flat {
  border-color: rgba(30, 41, 59, 0.95);
  background: rgba(15, 23, 42, 0.72);
}

.mk-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.09);
  color: var(--mk-primary-dark);
  padding: .45rem .75rem;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .02em;
}
.dark .mk-badge {
  background: rgba(20, 184, 166, 0.13);
  color: #99f6e4;
}

.mk-input {
  width: 100%;
  min-height: 3rem;
  border: 1px solid var(--mk-border);
  border-radius: 1rem;
  background: #fff;
  color: var(--mk-text);
  padding: .8rem 1rem;
  font-size: .95rem;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.mk-input:focus {
  border-color: var(--mk-primary);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, .14);
}
.dark .mk-input {
  border-color: #334155;
  background: #020617;
  color: #f8fafc;
}

.mk-btn-primary,
.mk-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border-radius: 1rem;
  padding: .8rem 1rem;
  font-size: .95rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.mk-btn-primary {
  border: 1px solid var(--mk-primary);
  background: var(--mk-primary);
  color: #fff;
  box-shadow: 0 14px 30px rgba(15, 118, 110, .22);
}
.mk-btn-primary:hover { background: var(--mk-primary-dark); transform: translateY(-1px); }
.mk-btn-secondary {
  border: 1px solid rgba(15, 118, 110, .32);
  background: #fff;
  color: var(--mk-primary-dark);
}
.mk-btn-secondary:hover { background: var(--mk-secondary); transform: translateY(-1px); }
.dark .mk-btn-secondary {
  background: #0f172a;
  color: #99f6e4;
  border-color: #115e59;
}

.mk-link {
  color: var(--mk-primary);
  font-weight: 800;
  text-decoration: none;
}
.mk-link:hover { color: var(--mk-primary-dark); text-decoration: underline; }
.dark .mk-link { color: #5eead4; }

.mk-icon-button {
  display: inline-flex;
  height: 2.55rem;
  width: 2.55rem;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(229, 231, 235, .9);
  border-radius: 999px;
  background: rgba(255,255,255,.82);
  color: var(--mk-text);
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(15, 23, 42, .08);
}
.dark .mk-icon-button {
  border-color: rgba(51, 65, 85, .9);
  background: rgba(15, 23, 42, .86);
  color: #f8fafc;
}