/* assets/login.css —— 登录页面专属样式 */

* { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f1f5f9 0%, #cbd5e1 100%);
    background-attachment: fixed;
    display: flex; justify-content: center; align-items: center;
    height: 100vh; margin: 0;
    transition: background 0.3s, color 0.3s;
}
.box {
    background: #ffffff; padding: 40px; border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    width: 420px; position: relative;
    transition: background 0.3s, box-shadow 0.3s;
}
.theme-toggle-btn {
    position: absolute; top: 20px; right: 20px;
    background: none; border: none; cursor: pointer;
    font-size: 16px; color: #64748b; padding: 6px 10px;
    border-radius: 6px; transition: background 0.2s;
}
.header-title { text-align: center; margin-bottom: 25px; }
.header-title h2 { margin: 0 0 8px 0; color: #0f172a; font-size: 22px; }
.header-title p { margin: 0; color: #64748b; font-size: 13px; }
.form-group { margin-bottom: 20px; }
label { display: block; margin-bottom: 8px; color: #334155; font-size: 14px; font-weight: 600; }
input[type="text"], input[type="password"] {
    width: 100%; padding: 12px 15px;
    border: 1px solid #cbd5e1; border-radius: 8px;
    font-size: 14px; background: #f8fafc; color: #1e293b;
    transition: all 0.3s; outline: none;
}
input[type="text"]:focus, input[type="password"]:focus {
    border-color: #2563eb; background: #ffffff;
    box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
}
.captcha-wrapper { display: flex; flex-direction: column; gap: 8px; }
.captcha-code {
    background: #f1f5f9; padding: 12px; border-radius: 8px;
    font-weight: bold; font-family: Consolas, Monaco, monospace;
    font-size: 18px; color: #dc2626; text-align: center;
    letter-spacing: 3px; user-select: none;
    border: 1px dashed #cbd5e1;
}
.captcha-tip { font-size: 12px; color: #64748b; text-align: center; }
button[type="submit"] {
    width: 100%; padding: 14px; background: #2563eb;
    border: none; color: white; border-radius: 8px;
    font-size: 16px; font-weight: 600; cursor: pointer;
    margin-top: 10px; transition: background 0.2s;
    box-shadow: 0 4px 6px -1px rgba(37,99,235,0.2);
}
button[type="submit"]:hover { background: #1d4ed8; }
.error {
    color: #dc2626; font-size: 13px; margin-bottom: 20px;
    background: #fef2f2; padding: 12px 16px;
    border-radius: 8px; border: 1px solid #fecaca;
}
.footer-info {
    text-align: center; margin-top: 25px; font-size: 12px;
    color: #94a3b8; border-top: 1px solid #e2e8f0; padding-top: 15px;
}

/* ===== 登录页面专属暗色模式 ===== */
html.dark-mode .box { background: #111827 !important; border: 1px solid #1f2937 !important; box-shadow: 0 20px 40px rgba(0,0,0,0.6) !important; }
html.dark-mode .captcha-code { background: #182232 !important; border-color: #374151 !important; color: #f87171 !important; }
html.dark-mode .captcha-tip { color: #9ca3af !important; }
html.dark-mode .footer-info { border-top-color: #1f2937 !important; color: #6b7280 !important; }