/* =========================================================
   Sign-in page
   ========================================================= */

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: var(--bg);
}

.signin-back {
  position: absolute;
  top: 24px;
  left: 24px;
  font-size: 14px;
  color: var(--ink-soft);
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 10px;
  transition: all 0.15s ease;
}
.signin-back:hover {
  background: var(--surface);
  text-decoration: none;
  color: var(--primary);
}

.signin-stage {
  max-width: 460px;
  width: 100%;
  text-align: center;
  animation: rise 0.6s ease-out both;
  position: relative;
  z-index: 1;
}

.signin-ornament {
  color: var(--primary);
  margin: 0 auto 8px;
  display: flex;
  justify-content: center;
  opacity: 0.4;
}

.signin-title {
  font-size: clamp(40px, 8vw, 64px);
  font-weight: 800;
  margin: 12px 0 16px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--ink) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.signin-title em {
  font-style: italic;
}

.signin-sub {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 36px;
  font-weight: 400;
}

.signin-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}
.signin-form label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-left: 4px;
}
.signin-form input {
  width: 100%;
  background: var(--surface);
  border: 1.5px solid var(--rule);
  border-radius: 10px;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--ink);
  transition: all 0.15s ease;
}
.signin-form input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px var(--primary-light);
}
.signin-form .btn-primary { margin-top: 8px; }

.signin-message {
  margin-top: 20px;
  font-size: 14px;
  color: var(--primary);
  min-height: 20px;
  font-weight: 500;
}