:root {
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --danger: #dc2626;
  --bg1: #ecfdf5;
  --bg2: #f0f9ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', 'Cairo', sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #99f6e4 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #bae6fd 0%, transparent 50%),
    linear-gradient(160deg, var(--bg1), var(--bg2));
}

html[dir='rtl'] body {
  font-family: 'Cairo', 'Inter', sans-serif;
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(400px, 100%);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 20px;
  padding: 32px 28px 24px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.1);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin: 0 auto 4px;
}

.login-card h1 {
  margin: 0;
  text-align: center;
  font-size: 22px;
}

.login-sub {
  margin: -6px 0 8px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
}

input {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}

input:focus {
  outline: 2px solid rgba(13, 148, 136, 0.35);
  border-color: var(--primary);
}

.login-error {
  margin: 0;
  color: var(--danger);
  font-size: 13px;
  text-align: center;
}

.hidden {
  display: none !important;
}

.btn-login {
  margin-top: 6px;
  border: 0;
  border-radius: 12px;
  padding: 13px 16px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  font-family: inherit;
}

.btn-login:hover {
  background: var(--primary-dark);
}

.btn-login:disabled {
  opacity: 0.7;
  cursor: wait;
}

.btn-lang {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 8px;
}

.btn-lang:hover {
  color: var(--primary);
}

.login-back {
  display: block;
  text-align: center;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.login-back:hover {
  color: var(--primary);
}