:root {
  --page-bg: #f8fafc;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --text-main: #0f172a;
  --text-soft: #64748b;
  --field-bg: #f1f5f9;
  --field-border: #cbd5e1;
  --primary: #22c55e;
  --primary-hover: #16a34a;
  --danger-soft: #b91c1c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body.login-page {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text-main);
  background: var(--page-bg);
  position: relative;
}

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

.login-card {
  width: 100%;
  max-width: 400px;
  border-radius: 18px;
  padding: 34px 30px 26px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
  animation: loginFadeIn 0.45s ease both;
}

.login-logo {
  display: block;
  width: auto;
  height: 54px;
  margin: 0 auto 16px;
  filter: drop-shadow(0 4px 14px rgba(15, 23, 42, 0.12));
}

.login-brand {
  margin: 0;
  text-align: center;
  font-size: 31px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.login-subtitle {
  margin: 10px 0 24px;
  text-align: center;
  color: var(--text-soft);
  font-size: 13px;
  letter-spacing: 0.03em;
}

.login-form {
  display: grid;
  gap: 12px;
}

.login-label {
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  letter-spacing: 0.03em;
}

.login-input-wrap {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: #94a3b8;
  pointer-events: none;
}

.login-input-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.login-input {
  width: 100%;
  border: 1px solid var(--field-border);
  border-radius: 11px;
  background: var(--field-bg);
  color: var(--text-main);
  min-height: 46px;
  padding: 0 14px 0 38px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.login-input::placeholder {
  color: #94a3b8;
}

.login-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.18);
  background: #ecfdf3;
}

.login-row-meta {
  margin-top: 2px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.remember-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #475569;
  font-size: 12px;
  cursor: pointer;
}

.remember-check input {
  width: 14px;
  height: 14px;
  accent-color: var(--primary);
  cursor: pointer;
}

.forgot-link {
  font-size: 12px;
  color: #15803d;
  text-decoration: none;
  transition: color 0.2s ease;
}

.forgot-link:hover {
  color: #166534;
}

.login-error {
  margin: 2px 0 0;
  min-height: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  color: var(--danger-soft);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 10px;
  padding: 0 10px;
  font-size: 12px;
  line-height: 1.4;
  transition: all 0.2s ease;
}

.login-error.is-visible {
  margin-top: 6px;
  min-height: 36px;
  max-height: 72px;
  opacity: 1;
  padding: 8px 10px;
}

.login-btn {
  margin-top: 4px;
  width: 100%;
  border: 0;
  border-radius: 12px;
  min-height: 46px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #f8fafc;
  background: var(--primary);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow: 0 10px 20px rgba(34, 197, 94, 0.28);
}

.login-btn:hover {
  transform: translateY(-1px) scale(1.02);
  background: var(--primary-hover);
  box-shadow: 0 14px 26px rgba(22, 163, 74, 0.32);
}

.login-btn:disabled {
  opacity: 0.75;
  cursor: wait;
  transform: none;
}

.login-footnote {
  margin: 16px 0 0;
  text-align: center;
  font-size: 11px;
  color: #94a3b8;
  letter-spacing: 0.04em;
}

@keyframes loginFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 520px) {
  .login-container {
    padding: 16px;
  }

  .login-card {
    padding: 28px 20px 22px;
    border-radius: 16px;
  }

  .login-logo {
    height: 50px;
  }

  .login-brand {
    font-size: 28px;
  }
}