:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --border: #dbe3ef;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #0f6bff;
  --primary-dark: #0054d9;
  --radius: 16px;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 35%, rgba(15, 107, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}

.login-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.login-header {
  height: 86px;
  padding: 0 36px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 26px;
  font-weight: 800;
}

.login-brand-icon {
  width: 40px;
  height: 40px;
  border: 2px solid var(--primary);
  border-radius: 10px;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.login-main {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(360px, 560px) 1fr;
  gap: 80px;
  align-items: center;
  justify-content: center;
  padding: 48px 64px;
}

.login-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px;
}

.login-title-block {
  text-align: center;
}

.login-title-block h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 800;
}

.login-title-block p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.login-divider {
  margin: 34px 0;
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--primary);
}

.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.login-divider span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #f8fbff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-section {
  margin-bottom: 24px;
}

label {
  display: block;
  margin-bottom: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 800;
}

input {
  width: 100%;
  height: 56px;
  border: 1px solid #cfd8e5;
  border-radius: 8px;
  padding: 0 18px;
  font-size: 16px;
  color: var(--text);
  outline: none;
  background: #fff;
}

input::placeholder {
  color: #94a3b8;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 107, 255, 0.12);
}

button {
  width: 100%;
  height: 56px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
}

.btn-outline {
  margin-top: 16px;
  border: 1px solid var(--primary);
  background: #fff;
  color: var(--primary);
}

.btn-outline:hover {
  background: #f0f6ff;
}

.btn-primary-login {
  margin-top: 8px;
  border: 0;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(15, 107, 255, 0.24);
}

.btn-primary-login:hover:not(:disabled) {
  background: var(--primary-dark);
}

.btn-primary-login:disabled {
  background: #bfdbfe;
  cursor: not-allowed;
  box-shadow: none;
}

.hidden {
  display: none;
}

.login-message {
  min-height: 24px;
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.login-help {
  margin: 24px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 15px;
}

.login-footer {
  padding: 20px;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

/* Illustration */

.login-illustration {
  min-height: 520px;
  position: relative;
}

.mailbox {
  position: absolute;
  right: 8%;
  bottom: 8%;
  width: 360px;
  height: 360px;
  opacity: 0.82;
}

.mailbox-box {
  position: absolute;
  right: 40px;
  bottom: 80px;
  width: 210px;
  height: 150px;
  background: linear-gradient(135deg, #c7ddff, #78aaf7);
  border-radius: 80px 80px 20px 20px;
}

.mailbox-post {
  position: absolute;
  right: 124px;
  bottom: 0;
  width: 32px;
  height: 190px;
  background: linear-gradient(180deg, #0f6bff, #83b3ff);
  border-radius: 18px;
}

.mailbox-flag {
  position: absolute;
  right: 64px;
  bottom: 205px;
  width: 42px;
  height: 110px;
  background: var(--primary);
  border-radius: 10px;
}

.mail-envelope {
  position: absolute;
  left: 30px;
  bottom: 92px;
  width: 160px;
  height: 100px;
  background: #ffffff;
  border: 1px solid #c7d7ef;
  transform: rotate(-9deg);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.12);
}

.mail-envelope::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, transparent 49%, #dbeafe 50%, transparent 51%),
    linear-gradient(35deg, transparent 49%, #dbeafe 50%, transparent 51%);
}

/* Responsive */

@media (max-width: 960px) {
  .login-main {
    grid-template-columns: 1fr;
    padding: 36px 20px;
  }

  .login-card {
    max-width: 560px;
    margin: 0 auto;
  }

  .login-illustration {
    display: none;
  }
}

@media (max-width: 520px) {
  .login-header {
    height: 72px;
    padding: 0 20px;
  }

  .login-brand {
    font-size: 22px;
  }

  .login-card {
    padding: 30px 22px;
  }

  .login-title-block h1 {
    font-size: 28px;
  }

  .login-title-block p {
    font-size: 15px;
  }

  .login-divider {
    margin: 26px 0;
  }

  input,
  button {
    height: 52px;
  }

  .login-footer {
    font-size: 13px;
  }
}