﻿/* ═══════════════════════════════════════════════════════════════
   auth-login.css  v2  (2026-09-22:日間模式頂列連結改白色)
   登入頁 / 帳號安全頁 / 登入鎖定管理頁 共用樣式。
   自帶版面,不依賴其他樣式框架(未登入時只有少數靜態目錄可讀)。
   夜間=預設;日間以 <html data-theme="light"> 切換(auth-login.js)。
   ═══════════════════════════════════════════════════════════════ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-page: #0a0a0f;
    --bg-card: rgba(15, 23, 42, .95);
    --bg-input: rgba(30, 41, 59, .8);
    --bg-input-focus: rgba(30, 41, 59, .95);
    --bd: rgba(0, 255, 255, .2);
    --bd-focus: #00ffff;
    --tx: #ffffff;
    --tx-sub: #64748b;
    --tx-label: #e2e8f0;
    --tx-info: #94a3b8;
    --accent: #00ffff;
    --accent2: #3b82f6;
    --grid: rgba(0, 255, 255, .08);
    --shadow: rgba(0, 0, 0, .5);
    --err-bg: rgba(239, 68, 68, .12); --err-bd: rgba(239, 68, 68, .35); --err-tx: #fca5a5;
    --ok-bg: rgba(34, 197, 94, .12);  --ok-bd: rgba(34, 197, 94, .35);  --ok-tx: #86efac;
    --info-bg: rgba(30, 41, 59, .5);
    --btn-tx: #06202a;
}
[data-theme="light"] {
    --bg-page: linear-gradient(135deg, #0F766E 0%, #115E59 100%);
    --bg-card: rgba(255, 255, 255, .96);
    --bg-input: rgba(248, 250, 252, .95);
    --bg-input-focus: #ffffff;
    --bd: rgba(148, 163, 184, .4);
    --bd-focus: #3b82f6;
    --tx: #1e293b;
    --tx-sub: #64748b;
    --tx-label: #374151;
    --tx-info: #475569;
    --accent: #2563eb;
    --accent2: #0F766E;
    --grid: rgba(255, 255, 255, .08);
    --shadow: rgba(0, 0, 0, .18);
    --err-tx: #b91c1c; --ok-tx: #15803d;
    --info-bg: rgba(241, 245, 249, .9);
    --btn-tx: #ffffff;
}

html, body { min-height: 100%; }
body {
    font-family: 'Inter', 'Noto Sans TC', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-page);
    background-attachment: fixed;
    color: var(--tx);
    min-height: 100vh;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 32px 16px;
    line-height: 1.6;
}
body::before {
    content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
    background-size: 44px 44px;
}

.auth-wrap { position: relative; z-index: 1; display: flex; gap: 28px; align-items: stretch; justify-content: center; flex-wrap: wrap; width: 100%; max-width: 860px; }
.auth-wrap.wide { max-width: 1080px; }
.auth-card {
    flex: 1 1 340px; max-width: 400px;
    background: var(--bg-card); border: 1px solid var(--bd); border-radius: 20px;
    padding: 36px 32px; box-shadow: 0 24px 60px var(--shadow);
    backdrop-filter: blur(14px);
}
.auth-card.full { max-width: none; flex-basis: 100%; }
.auth-head { text-align: center; margin-bottom: 26px; }
.auth-head h1, .auth-head h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: .04em; }
.auth-head h2 { font-size: 1.25rem; }
.auth-head i { margin-right: 10px; }
.auth-sub { font-size: .75rem; letter-spacing: .18em; color: var(--tx-sub); margin-top: 6px; text-transform: uppercase; }

.alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px; border-radius: 10px; font-size: .9rem; margin-bottom: 18px; border: 1px solid; }
.alert i { margin-top: 4px; }
.alert-danger { background: var(--err-bg); border-color: var(--err-bd); color: var(--err-tx); }
.alert-success { background: var(--ok-bg); border-color: var(--ok-bd); color: var(--ok-tx); }

.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: .85rem; font-weight: 600; color: var(--tx-label); margin-bottom: 8px; }
.input-wrap { position: relative; }
.input-wrap > i.lead { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--tx-sub); pointer-events: none; }
.form-control {
    width: 100%; padding: 14px 44px 14px 46px; font-size: 1rem; font-family: inherit;
    color: var(--tx); background: var(--bg-input); border: 1px solid var(--bd); border-radius: 12px;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.form-control::placeholder { color: var(--tx-sub); }
.form-control:focus { outline: none; border-color: var(--bd-focus); background: var(--bg-input-focus); box-shadow: 0 0 0 3px rgba(59, 130, 246, .18); }
.form-control[aria-invalid="true"] { border-color: var(--err-bd); }
.pw-toggle { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); background: none; border: 0; color: var(--tx-sub); cursor: pointer; padding: 8px; border-radius: 8px; }
.pw-toggle:hover, .pw-toggle:focus-visible { color: var(--accent); outline: none; }
.field-hint { display: none; font-size: .8rem; margin-top: 6px; color: var(--err-tx); }
.field-hint.show { display: block; }
.field-hint.warn { color: #fbbf24; }
[data-theme="light"] .field-hint.warn { color: #b45309; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; width: 100%; padding: 14px 18px; font-size: 1rem; font-weight: 700; font-family: inherit; letter-spacing: .08em; border-radius: 12px; border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: transform .15s, box-shadow .2s, opacity .2s, background .2s; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { color: var(--btn-tx); background: linear-gradient(90deg, var(--accent2), var(--accent), var(--accent2)); background-size: 200% 100%; box-shadow: 0 10px 24px rgba(0, 0, 0, .25); }
.btn-primary:hover:not(:disabled) { transform: translateY(-1px); background-position: 100% 0; }
.btn-ghost { color: var(--accent); background: transparent; border-color: var(--bd); font-weight: 600; letter-spacing: .04em; }
.btn-ghost:hover:not(:disabled) { border-color: var(--accent); }
.btn-google { color: #1f2937; background: #ffffff; border-color: #dadce0; font-weight: 600; letter-spacing: .02em; }
.btn-google:hover { box-shadow: 0 2px 10px rgba(0, 0, 0, .2); }
.btn-google .g { width: 18px; height: 18px; flex: none; }
.btn-danger { color: var(--err-tx); background: var(--err-bg); border-color: var(--err-bd); font-weight: 600; letter-spacing: .04em; }
.btn-sm { width: auto; padding: 6px 14px; font-size: .85rem; letter-spacing: .02em; border-radius: 8px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.or { display: flex; align-items: center; gap: 12px; margin: 20px 0; color: var(--tx-sub); font-size: .75rem; letter-spacing: .14em; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--bd); }
.note { font-size: .8rem; color: var(--tx-info); margin-top: 10px; }
.note a, .link { color: var(--accent); text-decoration: none; }
.note a:hover, .link:hover { text-decoration: underline; }

.info { background: var(--info-bg); border: 1px solid var(--bd); border-radius: 14px; padding: 16px 18px; margin-bottom: 18px; font-size: .9rem; color: var(--tx-info); }
.info h4 { font-size: .9rem; color: var(--accent); margin-bottom: 8px; }
.info h4 i { margin-right: 6px; }
.info p + p { margin-top: 4px; }
.info strong { color: var(--tx-label); }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: .92rem; }
.kv dt { color: var(--tx-sub); }
.kv dd { color: var(--tx); word-break: break-all; }

.theme-toggle { position: fixed; top: 16px; right: 16px; z-index: 2; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--bd); background: var(--bg-card); color: var(--accent); cursor: pointer; }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.tbl-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: .88rem; }
.tbl th, .tbl td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--bd); white-space: nowrap; }
.tbl th { color: var(--tx-sub); font-weight: 600; font-size: .78rem; letter-spacing: .06em; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .75rem; border: 1px solid; }
.badge-lock { color: var(--err-tx); background: var(--err-bg); border-color: var(--err-bd); }
.badge-ok { color: var(--ok-tx); background: var(--ok-bg); border-color: var(--ok-bd); }
.row-inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row-inline .form-control { padding: 10px 14px; width: 220px; }
.topbar { position: relative; z-index: 1; width: 100%; max-width: 1080px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; font-size: .9rem; }
.topbar .link { color: var(--accent); }
[data-theme="light"] .topbar .link { color: #ffffff; text-shadow: 0 1px 2px rgba(0, 0, 0, .35); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
@media (max-width: 560px) { .auth-card { padding: 28px 22px; } body { justify-content: flex-start; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
