/* Unified login page design (user + admin). Same skeleton, same look. */
:root {
  font-family: 'PingFangSC', Inter, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  color: #15231e;
  --bg1: #eef6f1; --bg2: #e4f0e9;
  --card: rgba(255,255,255,.82); --line: rgba(19,52,41,.09);
  --heading: #0f1c17; --text: #15231e; --muted: #5b7066; --faint: #8b9c93;
  --green: #0a9b75; --green-deep: #0d7355; --green-soft: #eafaf2;
  --input-bg: #f7faf8; --input-border: rgba(19,52,41,.14);
  --shadow: 0 24px 60px -24px rgba(15,42,33,.22), 0 2px 6px rgba(15,42,33,.05);
  font-synthesis: none; -webkit-font-smoothing: antialiased;
}
:root[data-theme="dark"] {
  color-scheme: dark; color: #e9f2ed;
  --bg1: #07130d; --bg2: #050c09;
  --card: rgba(255,255,255,.05); --line: rgba(255,255,255,.09);
  --heading: #f4fbf7; --text: #e9f2ed; --muted: #8ba398; --faint: #5f7a6d;
  --green: #2fd48a; --green-deep: #28cd8b; --green-soft: rgba(47,212,138,.1);
  --input-bg: rgba(255,255,255,.05); --input-border: rgba(255,255,255,.13);
  --shadow: 0 40px 90px -24px rgba(0,0,0,.75), 0 0 90px -34px rgba(47,212,138,.22);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  display: grid; place-items: center; padding: 24px;
  background:
    radial-gradient(720px 420px at 12% -10%, rgba(10,155,117,.14), transparent 62%),
    radial-gradient(860px 520px at 92% 2%, rgba(45,160,130,.10), transparent 60%),
    radial-gradient(620px 520px at 78% 106%, rgba(240,190,87,.08), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
  background-attachment: fixed;
}
@keyframes loginFade { from { opacity: 0; transform: translateY(16px) scale(.985); } to { opacity: 1; transform: none; } }
.login-wrap { width: min(100%, 420px); }
.login-brand { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 22px; color: var(--heading); text-decoration: none; }
.login-brand img { width: 44px; height: 44px; border-radius: 12px; box-shadow: 0 8px 18px -4px rgba(13,115,85,.45); }
.login-brand b { font-size: 19px; letter-spacing: .6px; font-weight: 800; }
.login-brand small { display: block; color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: .4px; margin-top: 2px; }
.login-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: 22px; padding: 34px 32px 28px; box-shadow: var(--shadow);
  backdrop-filter: blur(18px); animation: loginFade .5s cubic-bezier(.2,.7,.25,1) both;
}
.login-card::before { content: ''; position: absolute; top: 0; left: 28px; right: 28px; height: 1px; background: linear-gradient(90deg, transparent 4%, rgba(10,155,117,.45) 50%, transparent 96%); }
.login-eyebrow { margin: 2px 0 8px; color: var(--green); font-size: 10px; font-weight: 800; letter-spacing: 2.6px; }
.login-title { margin: 0; font-size: 27px; font-weight: 800; letter-spacing: -.02em; color: var(--heading); }
.login-sub { margin: 9px 0 24px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }
.login-field { margin-bottom: 15px; }
.login-field label { display: block; margin: 0 0 7px; color: var(--muted); font-size: 11.5px; font-weight: 700; letter-spacing: .3px; }
.login-field input {
  width: 100%; padding: 12px 14px; font: inherit; color: var(--text);
  background: var(--input-bg); border: 1px solid var(--input-border); border-radius: 12px; outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.login-field input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(10,155,117,.16); background: #fff; }
:root[data-theme="dark"] .login-field input:focus { background: rgba(255,255,255,.07); }
.login-code-row { display: flex; gap: 10px; }
.login-code-row input { flex: 1; }
.login-code-row .btn-quiet { flex: 0 0 auto; }
.btn { font: inherit; cursor: pointer; border: 1px solid var(--line); border-radius: 12px; padding: 11px 16px; background: transparent; color: var(--text); transition: .15s; }
.btn:hover { border-color: var(--green); color: var(--green); }
.btn.primary {
  width: 100%; padding: 13px; border: 0; border-radius: 13px; margin-top: 6px;
  font-weight: 750; font-size: 15px; color: #fff; cursor: pointer;
  background: linear-gradient(180deg, #12b47f, var(--green-deep));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 12px 26px -8px rgba(13,115,85,.5);
  transition: transform .12s, box-shadow .15s, filter .15s;
}
.btn.primary:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn.primary:active { transform: translateY(0); }
.btn.primary:disabled { opacity: .6; cursor: default; transform: none; }
.login-message { min-height: 20px; margin: 14px 0 0; font-size: 12.5px; text-align: center; }
.login-message.error { color: #c23347; }
.login-message.success { color: var(--green); }
.login-links { margin-top: 18px; display: flex; justify-content: space-between; align-items: center; font-size: 12.5px; color: var(--muted); }
.login-links a { color: var(--green); text-decoration: none; font-weight: 650; }
.login-links a:hover { text-decoration: underline; }
.theme-fab { position: fixed; top: 18px; right: 18px; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); background: var(--card); color: var(--muted); cursor: pointer; font-size: 16px; backdrop-filter: blur(10px); }
@media (max-width: 480px) { .login-card { padding: 28px 22px 24px; } }