/* ============================================================
   login.css — 江苏能越新材料科技有限公司 · 集团风企业登录页
   ============================================================ */

:root {
    --corp-primary:   #0B2A4A;
    --corp-hover:     #0e3460;
    --corp-accent:    #1a5276;
    --corp-border:    #d0d7de;
    --corp-bg-card:   #ffffff;
    --corp-text:      #1a1f2e;
    --corp-muted:     #6b7280;
    --corp-light:     #f4f6f9;
    --corp-ring:      rgba(11, 42, 74, 0.18);
    --corp-shadow:    0 8px 32px rgba(11, 42, 74, 0.18), 0 2px 8px rgba(0,0,0,0.08);
    --corp-warn-bg:   #fffbeb;
    --corp-warn-border: #f59e0b;
    --corp-warn-text: #78350f;
    --corp-danger-bg: #fef2f2;
    --corp-danger:    #b91c1c;
    --corp-success-bg:#f0fdf4;
    --corp-success:   #15803d;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;

    /* 深蓝渐变背景 */
    background:
        linear-gradient(160deg, #071c30 0%, #0B2A4A 55%, #0a2240 100%);

    /* 纯 CSS 网格纹理（极淡） */
    background-image:
        linear-gradient(160deg, #071c30 0%, #0B2A4A 55%, #0a2240 100%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 39px,
            rgba(255,255,255,0.025) 39px,
            rgba(255,255,255,0.025) 40px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 39px,
            rgba(255,255,255,0.025) 39px,
            rgba(255,255,255,0.025) 40px
        );
    background-blend-mode: normal, overlay, overlay;
}

/* ── 登录卡片 ──────────────────────────────────────────────── */
.login-card {
    background: var(--corp-bg-card);
    border: 1px solid var(--corp-border);
    border-radius: 16px;
    box-shadow: var(--corp-shadow);
    width: 100%;
    max-width: 460px;
    animation: cardIn 0.45s cubic-bezier(0.22,1,0.36,1) both;
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── 企业标识区 ─────────────────────────────────────────────── */
.corp-brand {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 28px 32px 24px;
    border-bottom: 1px solid var(--corp-border);
    background: var(--corp-light);
    border-radius: 16px 16px 0 0;
}

/* 纯 CSS 圆形徽章 */
.corp-badge {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--corp-primary);
    border: 3px solid rgba(255,255,255,0.15);
    box-shadow: 0 2px 8px rgba(11,42,74,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* 徽章内 SVG 图标 */
.corp-badge svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: #ffffff;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.corp-brand-text h1 {
    font-size: 17px;
    font-weight: 700;
    color: var(--corp-text);
    letter-spacing: 0.02em;
    line-height: 1.3;
}

.corp-brand-text .subtitle {
    font-size: 13px;
    color: var(--corp-muted);
    margin-top: 3px;
    letter-spacing: 0.01em;
}

/* ── 卡片主体 ───────────────────────────────────────────────── */
.login-body {
    padding: 28px 32px 24px;
}

/* ── 安全声明条 ─────────────────────────────────────────────── */
.security-notice {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    background: #f0f4f8;
    border-left: 3px solid var(--corp-primary);
    border-radius: 0 6px 6px 0;
    padding: 10px 14px;
    margin-bottom: 22px;
    font-size: 12px;
    color: #374151;
    line-height: 1.5;
}

.security-notice .notice-icon {
    flex-shrink: 0;
    margin-top: 1px;
    color: var(--corp-primary);
}

/* ── Flash 消息 ─────────────────────────────────────────────── */
.flash-message {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 11px 14px;
    margin-bottom: 18px;
    border-radius: 8px;
    font-size: 13.5px;
    line-height: 1.5;
    animation: slideIn 0.28s ease both;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.flash-message.danger  { background: var(--corp-danger-bg);  color: var(--corp-danger);  border: 1px solid #fecaca; }
.flash-message.success { background: var(--corp-success-bg); color: var(--corp-success); border: 1px solid #bbf7d0; }
.flash-message.warning { background: var(--corp-warn-bg);    color: var(--corp-warn-text); border: 1px solid #fde68a; }

/* ── 表单 ───────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--corp-text);
    letter-spacing: 0.01em;
}

.form-group input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--corp-border);
    border-radius: 8px;
    font-size: 15px;
    color: var(--corp-text);
    background: #fafbfc;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--corp-primary);
    box-shadow: 0 0 0 3px var(--corp-ring);
    background: #ffffff;
}

.form-group input::placeholder {
    color: #b0b8c4;
    font-size: 14px;
}

/* ── 主登录按钮 ──────────────────────────────────────────────── */
.btn-login {
    display: block;
    width: 100%;
    height: 46px;
    margin-top: 6px;
    background: var(--corp-primary);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 15.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.btn-login:hover {
    background: var(--corp-hover);
    box-shadow: 0 4px 16px rgba(11,42,74,0.28);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: none;
}

/* ── 微信登录（次要入口）────────────────────────────────────── */
.wechat-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0 16px;
    color: #c5cdd8;
    font-size: 12px;
}

.wechat-divider::before,
.wechat-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--corp-border);
}

.btn-wechat {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    height: 40px;
    border: 1px solid var(--corp-border);
    border-radius: 8px;
    background: #fff;
    color: var(--corp-muted);
    font-size: 13.5px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
}

.btn-wechat:hover {
    background: var(--corp-light);
    border-color: #9ca3af;
    color: var(--corp-text);
}

.btn-wechat svg {
    width: 18px;
    height: 18px;
    fill: #07c160;
}

.wechat-unconfigured {
    text-align: center;
    font-size: 12.5px;
    color: #9ca3af;
    padding: 6px 0;
}

.btn-wechat--disabled {
    opacity: 0.5;
    cursor: not-allowed;
    /* pointer-events 保持 auto，允许点击跳转到"暂未开通"说明页 */
    pointer-events: auto;
    border-style: dashed;
    color: #9ca3af;
}

.btn-wechat--disabled svg {
    fill: #9ca3af;
}

.btn-wechat--disabled:hover,
.btn-wechat--disabled:focus {
    background: #fff;
    border-color: #c5cdd8;
    border-style: dashed;
    color: #9ca3af;
}

@media (max-width: 480px) {
    .btn-wechat--disabled {
        font-size: 13px;
    }
}

/* ── 卡片底部 ───────────────────────────────────────────────── */
.login-footer {
    padding: 16px 32px 20px;
    border-top: 1px solid var(--corp-border);
    background: var(--corp-light);
    border-radius: 0 0 16px 16px;
    text-align: center;
}

.login-footer .copyright {
    font-size: 12px;
    color: var(--corp-muted);
    letter-spacing: 0.01em;
}

.login-footer .footer-hint {
    font-size: 11.5px;
    color: #9ca3af;
    margin-top: 5px;
}

/* ── 页面底部水印文字 ────────────────────────────────────────── */
.page-bottom {
    margin-top: 20px;
    font-size: 11.5px;
    color: rgba(255,255,255,0.28);
    text-align: center;
    letter-spacing: 0.01em;
}

/* ── 移动端适配 ──────────────────────────────────────────────── */
@media (max-width: 768px) {
    .login-card {
        border-radius: 12px;
    }

    .corp-brand {
        padding: 22px 20px 18px;
        border-radius: 12px 12px 0 0;
    }

    .corp-brand-text h1 {
        font-size: 15px;
    }

    .login-body {
        padding: 22px 20px 18px;
    }

    .login-footer {
        padding: 14px 20px 16px;
        border-radius: 0 0 12px 12px;
    }
}