/* ========== 基础 ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f2f4f8;
    --card-bg: #ffffff;
    --ink: #1f2733;
    --ink-2: #5b6572;
    --line: #e3e7ee;
    --brand: #1a5fb4;
    --brand-dark: #155099;
    --ok-bg: #e7f6ec;
    --ok-ink: #1e7b3c;
    --err-bg: #fdecea;
    --err-ink: #b3261e;
    --radius: 14px;
    --shadow: 0 2px 10px rgba(31, 39, 51, .07);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========== 布局 ========== */
.page {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 16px 48px;
}

.site-header { text-align: center; margin: 20px 0 24px; }
.site-header h1 { font-size: 1.5rem; letter-spacing: .05em; }
.subtitle { color: var(--ink-2); font-size: .9rem; margin-top: 6px; }
.subtitle a { color: var(--brand); text-decoration: none; }

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px 20px;
    margin-bottom: 18px;
}
.card h2 { font-size: 1.05rem; margin-bottom: 14px; }

/* ========== 表单 ========== */
.field { margin-bottom: 16px; }
.field label, .field .label {
    display: block;
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.field input[type="text"],
.field input[type="password"] {
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;               /* 防止 iOS 聚焦自动放大 */
    border: 1.5px solid var(--line);
    border-radius: 10px;
    background: #fbfcfe;
    outline: none;
    transition: border-color .15s;
}
.field input:focus { border-color: var(--brand); background: #fff; }
.field input[type="file"] {
    width: 100%;
    font-size: .9rem;
    padding: 10px;
    border: 1.5px dashed var(--line);
    border-radius: 10px;
    background: #fbfcfe;
}
.field-hint { font-size: .78rem; color: var(--ink-2); margin-top: 6px; }
.field-hint.error { color: var(--err-ink); font-weight: 600; }

.radio {
    display: block;
    font-weight: 400 !important;
    font-size: .9rem !important;
    margin: 6px 0;
    cursor: pointer;
}
.radio input { margin-right: 6px; }

/* ========== 验证码 ========== */
.captcha-row { display: flex; gap: 10px; align-items: stretch; }
.captcha-row input { flex: 1 1 auto; min-width: 0; }
.captcha-badge {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 0 16px;
    border-radius: 10px;
    border: 1.5px solid var(--line);
    background:
        repeating-linear-gradient(45deg, transparent 0 6px, rgba(0,0,0,.025) 6px 12px),
        #f6f8fb;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    min-height: 48px;
}
.captcha-badge i {
    font-style: normal;
    font-family: "Courier New", monospace;
    font-size: 1.35rem;
    font-weight: 700;
    display: inline-block;
}

/* ========== 按钮 ========== */
.btn {
    display: block;
    width: 100%;
    padding: 13px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: .15em;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background .15s, opacity .15s;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:not(:disabled):hover { background: var(--brand-dark); }
.btn-danger { background: #c0392b; color: #fff; }
.btn-danger:hover { background: #a93226; }
.btn-ghost { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); }

/* ========== 提示条 ========== */
.alert {
    padding: 11px 14px;
    border-radius: 10px;
    font-size: .9rem;
    margin-bottom: 14px;
}
.alert-error { background: var(--err-bg); color: var(--err-ink); }
.alert-ok { background: var(--ok-bg); color: var(--ok-ink); }
.alert-empty { background: #fff8e6; color: #8a6d1a; margin-bottom: 0; }

/* ========== 查询结果 ========== */
.result-list { display: block; }
.result-item {
    display: flex;
    padding: 10px 2px;
    border-bottom: 1px solid var(--line);
    gap: 12px;
}
.result-item:last-child { border-bottom: none; }
.result-item dt {
    flex: 0 0 6.5em;
    color: var(--ink-2);
    font-size: .9rem;
    overflow-wrap: anywhere;
}
.result-item dd {
    flex: 1 1 auto;
    font-weight: 600;
    overflow-wrap: anywhere;
    word-break: break-all;
}
.muted { color: var(--ink-2); font-weight: 400; }

/* ========== 后台 ========== */
.danger-zone .btn { margin-bottom: 10px; }
.logout-form { margin-top: 4px; }

/* ========== 页脚 ========== */
.site-footer { text-align: center; margin-top: 8px; }
.site-footer a { color: var(--ink-2); font-size: .8rem; text-decoration: none; }

/* ========== 桌面端微调 ========== */
@media (min-width: 720px) {
    .page { padding-top: 48px; }
    .site-header h1 { font-size: 1.8rem; }
}

/* ========== 小屏手机 ========== */
@media (max-width: 360px) {
    .card { padding: 18px 14px; }
    .captcha-badge { padding: 0 10px; }
    .result-item dt { flex-basis: 5.5em; }
}