/* 艾英思登录页 - 明亮科技风 */
:root {
    --ais-red: #c41e24;
    --ais-red-light: #e63946;
    --ais-cyan: #1777ff;
    --ais-cyan-bright: #4096ff;
    --ais-cyan-glow: rgba(23, 119, 255, 0.25);
    --ais-bg: #f0f4f8;
    --ais-card: rgba(255, 255, 255, 0.92);
    --ais-text: #1a2b3c;
    --ais-text-dim: #5a6d80;
    --ais-border: rgba(23, 119, 255, 0.18);
}

html, body {
    height: 100%;
    margin: 0;
}

body.signin {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: rgb(220, 231, 242);
    overflow-x: hidden;
    color: var(--ais-text);
}

/* ========== 动态背景（对齐参考案例 login-bg 结构） ========== */
.ais-login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    /* ① 超大渐变 + background-position 动画 → 底色流动 */
    background: linear-gradient(
        220deg,
        rgb(220, 231, 242),
        rgb(191, 219, 254) 20%,
        rgb(224, 232, 255) 38%,
        rgb(219, 234, 254) 52%,
        rgb(241, 243, 255) 65%,
        rgb(235, 235, 245) 99%
    );
    background-size: 600% 600%;
    animation: ais-login-bg-flow 12s ease-in-out infinite;
}

@keyframes ais-login-bg-flow {
    0%, 100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
}

/* ② 蒙层：柔化对比 + 淡网格 */
.ais-login-bg-mask {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.1)),
        linear-gradient(rgba(23, 119, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(23, 119, 255, 0.04) 1px, transparent 1px);
    background-size: auto, 40px 40px, 40px 40px;
}

/* ③ 光球：radial-gradient + blur + transform 动画 */
.ais-login-bg-orb {
    position: absolute;
    border-radius: 50%;
    will-change: transform;
}

.ais-login-bg-orb-a {
    width: min(52vw, 600px);
    height: min(52vw, 600px);
    top: -10%;
    left: -8%;
    background: radial-gradient(circle, rgba(31, 89, 235, 0.58) 0%, transparent 65%);
    filter: blur(80px);
    opacity: 0.12;
    animation: ais-login-orb-a 20s ease-in-out infinite;
}

.ais-login-bg-orb-b {
    width: min(60vw, 530px);
    height: min(60vw, 530px);
    bottom: -12%;
    right: -10%;
    background: radial-gradient(circle, rgba(58, 131, 246, 0.52) 0%, transparent 66%);
    filter: blur(55px);
    opacity: 0.22;
    animation: ais-login-orb-b 16s ease-in-out infinite;
}

.ais-login-bg-orb-c {
    width: min(40vw, 450px);
    height: min(40vw, 450px);
    left: 50%;
    top: 40%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(89, 102, 241, 0.48) 0%, transparent 60%);
    filter: blur(50px);
    opacity: 0.72;
    animation: ais-login-orb-c 11s ease-in-out infinite;
}

@keyframes ais-login-orb-a {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33%      { transform: translate(8vw, 6vh) scale(1.08); }
    66%      { transform: translate(4vw, 12vh) scale(0.96); }
}

@keyframes ais-login-orb-b {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(-6vw, -5vh) scale(1.1); }
}

@keyframes ais-login-orb-c {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.72; }
    50%      { transform: translate(-42%, -46%) scale(1.12); opacity: 0.55; }
}

/* ④ 高光层 */
.ais-login-bg-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        125deg,
        rgba(255, 255, 255, 0.55) 0%,
        transparent 42%,
        transparent 68%,
        rgba(255, 255, 255, 0.2) 100%
    );
}

.ais-login-wrap {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 940px;
    padding: 24px;
    box-sizing: border-box;
}

.ais-login-card {
    display: flex;
    background: var(--ais-card);
    border-radius: 20px;
    border: 1px solid var(--ais-border);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.8) inset,
        0 20px 60px rgba(0, 100, 150, 0.1),
        0 0 60px rgba(0, 184, 230, 0.08);
    overflow: hidden;
    min-height: 520px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* ========== 左侧明亮科技品牌区 ========== */
.ais-login-brand {
    flex: 0 0 44%;
    background:
        linear-gradient(135deg, rgba(0, 184, 230, 0.08) 0%, transparent 55%),
        linear-gradient(180deg, #f5faff 0%, #ffffff 100%);
    padding: 44px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border-right: 1px solid var(--ais-border);
}

/* 左侧科技竖条 */
.ais-login-brand::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--ais-cyan-bright), var(--ais-red), var(--ais-cyan-bright));
    box-shadow: 0 0 10px var(--ais-cyan-glow);
}

/* 轻柔扫描线 */
.ais-login-brand::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--ais-cyan-bright), transparent);
    opacity: 0.6;
    animation: ais-scan 5s linear infinite;
    z-index: 3;
}

@keyframes ais-scan {
    0% { top: 0; opacity: 0; }
    15% { opacity: 0.5; }
    85% { opacity: 0.5; }
    100% { top: 100%; opacity: 0; }
}

.brand-deco {
    position: absolute;
    bottom: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    border: 1px solid var(--ais-border);
    border-radius: 50%;
    opacity: 0.5;
    pointer-events: none;
}

.brand-content {
    position: relative;
    z-index: 2;
}

.ais-brand-logo {
    display: block;
    margin-bottom: 30px;
    text-decoration: none;
    line-height: 0;
    background: transparent;
    padding: 0;
}

.ais-brand-logo .brand-logo-img {
    display: block;
    height: 52px;
    width: auto;
    max-width: 320px;
    object-fit: contain;
}

.ais-login-brand h2 {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 14px;
    letter-spacing: 0.06em;
    color: var(--ais-text);
    background: linear-gradient(90deg, var(--ais-text) 30%, var(--ais-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ais-login-brand .brand-desc {
    font-size: 14px;
    line-height: 1.85;
    color: var(--ais-text-dim);
    margin: 0 0 26px;
    max-width: 300px;
}

.brand-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.brand-features li {
    font-size: 13px;
    color: var(--ais-text-dim);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--ais-border);
    box-shadow: 0 2px 8px rgba(0, 100, 150, 0.04);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.brand-features li:hover {
    border-color: rgba(0, 184, 230, 0.4);
    box-shadow: 0 4px 12px var(--ais-cyan-glow);
}

.brand-features li i {
    color: var(--ais-cyan);
    margin-right: 12px;
    font-size: 15px;
}

/* ========== 右侧登录区 ========== */
.ais-login-form-panel {
    flex: 1;
    padding: 48px 44px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: rgba(255, 255, 255, 0.65);
    position: relative;
}

.ais-login-form-panel::before {
    content: "SECURE LOGIN";
    position: absolute;
    top: 22px;
    right: 28px;
    font-size: 10px;
    letter-spacing: 0.22em;
    color: var(--ais-cyan);
    opacity: 0.55;
    font-weight: 600;
}

.ais-login-form-panel h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--ais-text);
    margin: 0 0 6px;
    letter-spacing: 0.04em;
}

.ais-login-form-panel .form-subtitle {
    font-size: 13px;
    color: var(--ais-text-dim);
    margin: 0 0 28px;
}

.ais-form-group {
    margin-bottom: 18px;
}

.ais-form-group label {
    display: block;
    font-size: 12px;
    color: var(--ais-text-dim);
    margin-bottom: 8px;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.ais-form-group label .required {
    color: var(--ais-red);
    margin-right: 4px;
}

.ais-input-wrap {
    position: relative;
}

.ais-input-wrap .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ais-cyan);
    font-size: 14px;
    z-index: 2;
}

.ais-input-wrap .form-control {
    width: 100%;
    height: 46px !important;
    padding: 0 14px 0 42px !important;
    border: 1px solid #dce4ec !important;
    border-radius: 10px !important;
    font-size: 14px !important;
    color: var(--ais-text) !important;
    background: #f8fafc !important;
    box-sizing: border-box;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
}

.ais-input-wrap .form-control::placeholder {
    color: #a0aec0 !important;
}

.ais-input-wrap .form-control:focus {
    border-color: var(--ais-cyan-bright) !important;
    background: #fff !important;
    box-shadow: 0 0 0 3px var(--ais-cyan-glow), 0 0 20px rgba(23, 119, 255, 0.12) !important;
    outline: none;
}

.ais-captcha-row {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.ais-captcha-row .ais-input-wrap {
    flex: 1;
}

.ais-captcha-row .captcha-img-wrap {
    flex: 0 0 120px;
    border: 1px solid #dce4ec;
    border-radius: 10px;
    overflow: hidden;
    background: #f8fafc;
    cursor: pointer;
}

.ais-captcha-row .captcha-img-wrap img {
    width: 100%;
    height: 46px;
    object-fit: cover;
    display: block;
}

.ais-remember {
    margin: 4px 0 24px;
}

.ais-remember .checkbox-custom {
    position: relative;
    padding: 0 0 0 26px;
    margin-bottom: 0;
    display: inline-block;
}

.ais-remember .checkbox-custom input[type="checkbox"] {
    opacity: 0;
    position: absolute;
    cursor: pointer;
    z-index: 2;
    margin: -6px 0 0 0;
    top: 50%;
    left: 3px;
}

.ais-remember .checkbox-custom label:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    margin-top: -9px;
    width: 18px;
    height: 17px;
    border-radius: 4px;
    border: 1px solid #c5d0dc;
    background: #fff;
}

.ais-remember .checkbox-custom input[type="checkbox"]:checked + label:after {
    position: absolute;
    display: inline-block;
    font-family: 'FontAwesome';
    content: "\f00c";
    top: 50%;
    left: 3px;
    margin-top: -7px;
    font-size: 12px;
    color: var(--ais-cyan);
}

.ais-remember .checkbox-custom label {
    cursor: pointer;
    color: var(--ais-text-dim);
    font-size: 13px;
}

.ais-btn-login {
    width: 100%;
    height: 48px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--ais-red) 0%, var(--ais-red-light) 100%);
    color: #fff !important;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.08em;
    transition: box-shadow 0.25s, transform 0.15s;
    box-shadow: 0 4px 20px rgba(196, 30, 36, 0.3);
    position: relative;
    overflow: hidden;
}

.ais-btn-login::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s;
}

.ais-btn-login:hover {
    box-shadow: 0 8px 28px rgba(196, 30, 36, 0.35), 0 0 16px var(--ais-cyan-glow);
    transform: translateY(-2px);
}

.ais-btn-login:hover::before {
    transform: translateX(100%);
}

.ais-register-link {
    margin-top: 22px;
    text-align: center;
    font-size: 13px;
    color: var(--ais-text-dim);
}

.ais-register-link a {
    color: var(--ais-cyan);
    font-weight: 600;
    text-decoration: none;
}

.ais-register-link a:hover {
    color: var(--ais-red);
}

.ais-login-footer {
    position: relative;
    z-index: 2;
    margin-top: 24px;
    text-align: center;
    font-size: 12px;
    color: #9aa8b8;
}

label.error {
    color: var(--ais-red);
    font-size: 12px;
    margin-top: 4px;
    display: block;
}

@media screen and (max-width: 768px) {
    .ais-login-card {
        flex-direction: column;
        min-height: auto;
    }

    .ais-login-brand {
        flex: none;
        padding: 32px 24px;
        border-right: none;
        border-bottom: 1px solid var(--ais-border);
    }

    .ais-login-brand::before {
        display: none;
    }

    .brand-features {
        display: none;
    }

    .ais-login-form-panel {
        padding: 28px 24px 32px;
    }

    .ais-login-form-panel::before {
        display: none;
    }
}