:root {
  color-scheme: light;
  font-family: "Noto Sans Arabic", "Segoe UI", Tahoma, Arial, sans-serif;
  color: #172f42;
  background: #f3f6f6;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 15% 15%, rgb(47 155 140 / 12%), transparent 55%),
    radial-gradient(ellipse at 90% 90%, rgb(34 99 125 / 10%), transparent 55%),
    #f3f6f6;
}

.page {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 28px 20px;
}

.card {
  width: min(100%, 440px);
  padding: 36px 38px 24px;
  border: 1px solid #dce7e5;
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 20px 65px rgb(25 55 74 / 9%);
}

.brand { text-align: center; }
.brand-mark {
  display: block;
  margin-inline: auto;
  border-radius: 27px;
  box-shadow: 0 10px 24px rgb(38 130 124 / 20%);
}

h1 {
  margin: 18px 0 2px;
  font-size: 34px;
  font-weight: 800;
  line-height: 1.5;
}

.brand-caption { margin: 0; color: #6d838e; font-size: 15px; }
form { margin-top: 30px; }
.field { margin-bottom: 18px; }

label {
  display: block;
  margin: 0 3px 8px;
  color: #435b68;
  font-size: 16px;
  font-weight: 650;
}

input {
  width: 100%;
  height: 52px;
  padding: 0 15px;
  border: 1.5px solid #bdccd0;
  border-radius: 12px;
  background: #fff;
  color: #172f42;
  font: inherit;
  font-size: 17px;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

input:focus {
  outline: none;
  border-color: #278a80;
  box-shadow: 0 0 0 4px rgb(39 138 128 / 12%);
}

input[aria-invalid="true"] { border-color: #b95b5b; }

button {
  width: 100%;
  min-height: 52px;
  margin-top: 6px;
  padding: 10px 16px;
  border: 1px solid #237e76;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(130deg, #2f9587, #236b7a);
  box-shadow: 0 7px 16px rgb(38 130 124 / 18%);
  cursor: pointer;
  font: inherit;
  font-size: 17px;
  font-weight: 750;
  transition: filter 150ms ease, box-shadow 150ms ease;
}

button:hover { filter: brightness(1.05); }
button:focus-visible { outline: 3px solid #7dbab1; outline-offset: 3px; }
button:active { box-shadow: 0 3px 9px rgb(38 130 124 / 18%); }
button:disabled { opacity: .75; cursor: wait; }

.message {
  min-height: 24px;
  margin: 14px 0 0;
  color: #a63e3e;
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

@media (max-width: 480px) {
  .card { padding: 30px 24px 20px; border-radius: 22px; }
}

@media (max-height: 620px) {
  .page { padding-block: 16px; }
  .card { padding-top: 24px; }
  .brand-mark { width: 64px; height: 64px; border-radius: 20px; }
  h1 { margin-top: 10px; font-size: 30px; }
  form { margin-top: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  input, button { transition: none; }
}