:root {
  --bg: #0F172A;
  --panel: #1E293B;
  --card: #111827;
  --mut: #94A3B8;
  --txt: #F8FAFC;
  --b: #334155;
  --btn: #0284C7;
  --accent: #38BDF8;
}

* { box-sizing: border-box }

body {
  margin: 0;
  font-family: Inter, system-ui, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--txt);
}

/* ===========================
   LAYOUT
=========================== */
.wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(80% 60% at 50% 10%, #1E293B 0%, #0F172A 62%);
  padding: clamp(12px, 3vw, 24px);
}

.shell {
  width: min(100%, 520px);
  background: rgba(30, 41, 59, .86);
  border: 1px solid var(--b);
  border-radius: 18px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .35);
  padding: 28px;
  min-width: 0;
}

/* ===========================
   LOGO / HEADINGS
=========================== */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  min-width: 0;
}

.badge {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  display: grid;
  place-items: center;
}

h1 {
  font-size: 28px;
  margin: 0;
  font-weight: 800;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h2 {
  margin: 12px 0 14px;
  font-size: 18px;
  font-weight: 700;
}

/* ===========================
   FORM
=========================== */
label {
  display: block;
  margin: 10px 0 6px;
  color: var(--mut);
  font-size: 13px;
}

.in {
  width: 100%;
  min-height: 44px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--b);
  color: var(--txt);
  outline: none;
}

.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  gap: 8px;
  flex-wrap: nowrap;
  min-width: 0;
}

.mut { color: var(--mut); font-size: 13px }
.row > a,
.remember-label {
  white-space: nowrap;
  flex: 0 0 auto;
}

.btn {
  width: 100%;
  min-height: 44px;
  padding: 12px 14px;
  border: none;
  border-radius: 12px;
  background: var(--btn);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
}
.btn:disabled { opacity: .6; cursor: not-allowed }

.foot { text-align: right; margin-top: 10px }

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

/* ===========================
   ERROR BOX
=========================== */
.err {
  display: none;
  margin-bottom: 10px;
  background: #3a1116;
  border: 1px solid #6b1f28;
  color: #ffb4b8;
  padding: 10px;
  border-radius: 10px;
  font-size: 13px;
}
.err.okbox {
  background: #052e16;
  border-color: #166534;
  color: #bbf7d0;
}

/* ===========================
   REMEMBER / CHECKBOX
=========================== */
.remember-label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.remember-label input {
  accent-color: var(--accent);
}

/* ===========================
   REGISTRATION BOX
=========================== */
#regBox {
  display: none;
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--b);
}

.role-fields { display: none }

.mt-12 { margin-top: 12px }
.mt-14 { margin-top: 14px }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 768px) {
  .shell { padding: 20px }
  h1 { font-size: 24px }
  .row { align-items: center }
  .foot { text-align: left }
}

@media (max-width: 460px) {
  .shell { padding: 18px }
  .row {
    align-items: flex-start;
    flex-wrap: wrap;
  }
  .row > a,
  .remember-label {
    flex: 1 1 auto;
  }
}