/* ========================================================================
   琼崖红韵 · 登录页面样式 (Login Page Styles)
   品牌主色：--dash-red #C41E3A / --dash-gold #D4AF37 / --dash-deep-red #8B0000
   设计原则：现代、克制、品牌一致、可访问性 WCAG 2.1 AA
   ======================================================================== */

:root {
    /* 品牌色（与系统统一） */
    --login-red: #C41E3A;
    --login-deep-red: #8B0000;
    --login-gold: #D4AF37;
    --login-gold-soft: #F0D875;
    --login-gold-dim: rgba(212, 175, 55, 0.12);
    --login-red-dim: rgba(196, 30, 58, 0.08);
    --login-red-glow: rgba(196, 30, 58, 0.18);

    /* 中性色 */
    --login-bg: #FAF8F5;
    --login-surface: #FFFFFF;
    --login-surface-2: #F7F4EF;
    --login-text-primary: #1A1A2E;
    --login-text-secondary: #4A4A68;
    --login-text-tertiary: #71718C;
    --login-text-on-red: #FFFFFF;
    --login-text-on-red-soft: rgba(255, 255, 255, 0.85);
    --login-border: rgba(196, 30, 58, 0.10);
    --login-border-strong: rgba(196, 30, 58, 0.22);

    /* 状态色 */
    --login-error: #DC2626;
    --login-error-bg: rgba(220, 38, 38, 0.08);
    --login-success: #16A34A;
    --login-success-bg: rgba(22, 163, 74, 0.08);

    /* 阴影系统 */
    --login-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --login-shadow-md: 0 6px 24px rgba(196, 30, 58, 0.10), 0 2px 6px rgba(0, 0, 0, 0.03);
    --login-shadow-lg: 0 20px 50px rgba(139, 0, 0, 0.20), 0 8px 20px rgba(0, 0, 0, 0.05);
    --login-shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.5);

    /* 间距系统（8px 为基础） */
    --login-sp-1: 4px;
    --login-sp-2: 8px;
    --login-sp-3: 12px;
    --login-sp-4: 16px;
    --login-sp-5: 20px;
    --login-sp-6: 24px;
    --login-sp-8: 32px;
    --login-sp-10: 40px;
    --login-sp-12: 48px;
    --login-sp-16: 64px;

    /* 圆角 */
    --login-radius-sm: 8px;
    --login-radius: 12px;
    --login-radius-lg: 18px;
    --login-radius-xl: 24px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: var(--login-text-primary);
    line-height: 1.5;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
    background: var(--login-bg);
}

main#main-content { outline: none; }

/* ========================================================================
   背景层 - 多层光晕 + 微网格
   ======================================================================== */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    background:
        radial-gradient(ellipse at top left, rgba(196, 30, 58, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at bottom right, rgba(212, 175, 55, 0.10) 0%, transparent 60%),
        linear-gradient(180deg, #FAF8F5 0%, #F5EFE6 100%);
}

.login-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(196, 30, 58, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(196, 30, 58, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.login-bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: glowDrift 22s ease-in-out infinite;
}
.login-bg-glow--a {
    width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(196, 30, 58, 0.35), transparent 70%);
    top: -120px; left: -100px;
}
.login-bg-glow--b {
    width: 380px; height: 380px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.40), transparent 70%);
    top: 30%; right: -80px;
    animation-delay: -7s;
    animation-duration: 28s;
}
.login-bg-glow--c {
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(196, 30, 58, 0.20), transparent 70%);
    bottom: -100px; left: 30%;
    animation-delay: -14s;
    animation-duration: 26s;
}

@keyframes glowDrift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.1); }
    66% { transform: translate(-30px, 20px) scale(0.95); }
}

/* ========================================================================
   主容器 - 卡片式
   ======================================================================== */
.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    max-width: 1180px;
    min-height: 640px;
    background: var(--login-surface);
    border-radius: var(--login-radius-xl);
    box-shadow: var(--login-shadow-lg);
    position: relative;
    z-index: 1;
    margin: var(--login-sp-6);
    overflow: hidden;
    animation: containerIn 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes containerIn {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ========================================================================
   左侧：品牌叙事区（红色品牌背景）
   ======================================================================== */
.login-left {
    position: relative;
    padding: var(--login-sp-12) var(--login-sp-10);
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: var(--login-text-on-red);
    background:
        radial-gradient(circle at 20% 0%, rgba(212, 175, 55, 0.18) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(0, 0, 0, 0.20) 0%, transparent 60%),
        linear-gradient(135deg, var(--login-deep-red) 0%, var(--login-red) 50%, #9F1B33 100%);
    overflow: hidden;
}

/* 装饰纹理：细网格 */
.login-left::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
}

/* 顶部金色灯带 */
.login-left::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        transparent 0%, var(--login-gold) 20%, var(--login-gold-soft) 50%, var(--login-gold) 80%, transparent 100%);
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.5);
}

.login-deco {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 120%;
    transform: translate(-50%, -50%);
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
    animation: rotate 60s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.login-hero {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 28rem;
    margin: 0 auto;
}

.hero-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--login-sp-3);
    padding: 6px 16px 6px 6px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    margin-bottom: var(--login-sp-6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.hero-logo {
    width: 32px; height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--login-gold) 0%, var(--login-gold-soft) 100%);
    color: var(--login-deep-red);
    font-family: 'Noto Serif SC', 'STKaiti', serif;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.hero-brand-divider {
    width: 1px; height: 16px;
    background: rgba(255, 255, 255, 0.3);
}

.hero-brand-sub {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    color: rgba(255, 255, 255, 0.85);
}

.hero-title {
    font-family: 'Noto Serif SC', 'STKaiti', serif;
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--login-gold);
    line-height: 1.1;
    margin-bottom: var(--login-sp-2);
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
    letter-spacing: 0.08em;
    margin-bottom: var(--login-sp-6);
}

.hero-divider {
    width: 60px;
    height: 2px;
    margin: 0 auto var(--login-sp-6);
    background: linear-gradient(90deg, transparent, var(--login-gold), transparent);
}

.hero-quote {
    font-size: 0.95rem;
    line-height: 1.85;
    font-style: italic;
    color: var(--login-text-on-red-soft);
    margin: 0 auto var(--login-sp-8);
    max-width: 26rem;
    letter-spacing: 0.04em;
    position: relative;
    padding: 0 var(--login-sp-4);
}

.hero-quote::before, .hero-quote::after {
    color: var(--login-gold);
    font-size: 1.4rem;
    font-weight: 700;
    position: absolute;
    font-family: 'Noto Serif SC', serif;
    opacity: 0.7;
}
.hero-quote::before { content: '"'; left: -8px; top: -8px; }
.hero-quote::after  { content: '"'; right: -8px; bottom: -16px; }

.hero-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--login-sp-3);
    margin-bottom: var(--login-sp-8);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--login-sp-2);
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: var(--login-radius);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: all 280ms ease;
    text-align: left;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(212, 175, 55, 0.5);
    transform: translateY(-2px);
}

.feature-icon {
    width: 32px; height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.20);
    color: var(--login-gold);
    border-radius: 8px;
    flex-shrink: 0;
}

.feature-icon .icon { width: 16px; height: 16px; }

.feature-text {
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--login-sp-8);
    padding-top: var(--login-sp-6);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: white;
    flex: 1;
}

.hero-stat-item strong {
    font-family: 'Noto Serif SC', 'STKaiti', serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--login-gold);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.hero-stat-item span {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.78);
}

/* ========================================================================
   右侧：登录交互区
   ======================================================================== */
.login-right {
    padding: var(--login-sp-12) var(--login-sp-10);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--login-surface);
}

.login-box {
    width: 100%;
    max-width: 28rem;
}

.login-header {
    text-align: center;
    margin-bottom: var(--login-sp-6);
}

.login-header-icon {
    width: 56px; height: 56px;
    margin: 0 auto var(--login-sp-3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.10), rgba(212, 175, 55, 0.10));
    border: 1px solid var(--login-border);
    border-radius: 16px;
    color: var(--login-red);
    position: relative;
}

.login-header-icon::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--login-red), var(--login-gold));
    opacity: 0;
    z-index: -1;
    transition: opacity 280ms ease;
}

.login-header-icon .icon { width: 26px; height: 26px; }

.login-header h2 {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--login-text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.login-header p {
    font-size: 0.9rem;
    color: var(--login-text-tertiary);
}

/* ========================================================================
   角色选择
   ======================================================================== */
.role-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--login-sp-2);
    margin-bottom: var(--login-sp-5);
}

.role-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    background: var(--login-surface);
    border: 1.5px solid var(--login-border);
    border-radius: var(--login-radius);
    cursor: pointer;
    transition: all 240ms cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    font: inherit;
    color: inherit;
    outline: none;
}

.role-card:hover {
    border-color: var(--login-border-strong);
    transform: translateY(-1px);
    box-shadow: var(--login-shadow-sm);
    background: var(--login-red-dim);
}

.role-card:focus-visible {
    border-color: var(--login-gold);
    box-shadow: 0 0 0 3px var(--login-gold-dim);
}

.role-card.active {
    border-color: var(--login-red);
    background: linear-gradient(180deg, var(--login-red-dim) 0%, rgba(212, 175, 55, 0.04) 100%);
    box-shadow: 0 4px 12px var(--login-red-glow);
}

.role-card.active::before {
    content: '';
    position: absolute;
    top: -1.5px; left: 50%;
    transform: translateX(-50%);
    width: 32px; height: 2px;
    background: linear-gradient(90deg, var(--login-red), var(--login-gold));
    border-radius: 1px;
}

.role-icon {
    width: 32px; height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--login-surface-2);
    color: var(--login-text-secondary);
    border-radius: 8px;
    margin-bottom: 2px;
    transition: all 240ms ease;
}

.role-icon .icon { width: 16px; height: 16px; }

.role-card.active .role-icon {
    background: linear-gradient(135deg, var(--login-red), var(--login-deep-red));
    color: white;
    transform: scale(1.05);
}

.role-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--login-text-primary);
}

.role-desc {
    font-size: 0.72rem;
    color: var(--login-text-tertiary);
    line-height: 1.3;
}

/* ========================================================================
   表单
   ======================================================================== */
form#loginForm { margin-bottom: var(--login-sp-3); }

.form-group {
    margin-bottom: var(--login-sp-4);
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--login-text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-text-tertiary);
    pointer-events: none;
    transition: color 240ms ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.input-icon .icon { width: 18px; height: 18px; }

input[type="text"], input[type="password"] {
    width: 100%;
    height: 46px;
    padding: 0 14px 0 42px;
    background: var(--login-surface);
    border: 1.5px solid var(--login-border);
    border-radius: var(--login-radius);
    color: var(--login-text-primary);
    font-size: 0.92rem;
    font-family: inherit;
    transition: all 240ms cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--login-shadow-inset);
    -webkit-appearance: none;
    appearance: none;
}

input[type="text"]:hover, input[type="password"]:hover {
    border-color: var(--login-border-strong);
}

input[type="text"]:focus, input[type="password"]:focus {
    outline: none;
    border-color: var(--login-red);
    box-shadow: 0 0 0 3px var(--login-red-dim), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    background: var(--login-surface);
}

input[type="text"]:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
    color: var(--login-red);
}

input::placeholder {
    color: var(--login-text-tertiary);
    font-weight: 400;
}

/* ========================================================================
   实时校验状态
   ======================================================================== */
input.is-valid {
    border-color: var(--login-success);
    background: var(--login-success-bg);
}
input.is-valid:focus {
    border-color: var(--login-success);
    box-shadow: 0 0 0 3px var(--login-success-bg);
}
input.is-invalid {
    border-color: var(--login-error);
    background: var(--login-error-bg);
}
input.is-invalid:focus {
    border-color: var(--login-error);
    box-shadow: 0 0 0 3px var(--login-error-bg);
}

.field-hint.hint-error { color: var(--login-error); font-weight: 500; }
.field-hint.hint-success { color: var(--login-success); font-weight: 500; }
.field-hint.hint-info { color: var(--login-text-tertiary); }

.toggle-password {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 34px; height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--login-text-tertiary);
    cursor: pointer;
    border-radius: 8px;
    transition: all 200ms ease;
    padding: 0;
}

.toggle-password:hover {
    background: var(--login-red-dim);
    color: var(--login-red);
}

.toggle-password .icon { width: 18px; height: 18px; }
.toggle-password .icon-eye-hide { display: none; }
.toggle-password.active .icon-eye-show { display: none; }
.toggle-password.active .icon-eye-hide { display: inline-block; }

.field-hint {
    font-size: 0.75rem;
    color: var(--login-text-tertiary);
    margin-top: 6px;
    min-height: 1em;
    transition: color 200ms ease;
}

.field-hint.error { color: var(--login-error); }
.field-hint.success { color: var(--login-success); }

/* ========================================================================
   表单选项
   ======================================================================== */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--login-sp-5);
    flex-wrap: wrap;
    gap: var(--login-sp-2);
}

.remember-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--login-text-secondary);
    user-select: none;
    -webkit-user-select: none;
}

.remember-checkbox input { display: none; }

.checkbox-box {
    width: 18px; height: 18px;
    border: 1.5px solid var(--login-border-strong);
    border-radius: 5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--login-surface);
    transition: all 200ms ease;
    flex-shrink: 0;
}

.checkbox-box .icon { width: 12px; height: 12px; color: white; opacity: 0; transition: opacity 200ms ease; }

.remember-checkbox input:checked + .checkbox-box {
    background: linear-gradient(135deg, var(--login-red), var(--login-deep-red));
    border-color: var(--login-red);
}

.remember-checkbox input:checked + .checkbox-box .icon { opacity: 1; }

.remember-checkbox:hover .checkbox-box { border-color: var(--login-red); }

.forgot-link {
    color: var(--login-red);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 200ms ease;
}

.forgot-link:hover { color: var(--login-deep-red); text-decoration: underline; }

/* ========================================================================
   登录按钮
   ======================================================================== */
.login-btn {
    width: 100%;
    height: 48px;
    padding: 0 var(--login-sp-5);
    background: linear-gradient(135deg, var(--login-red) 0%, var(--login-deep-red) 100%);
    color: white;
    border: none;
    border-radius: var(--login-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--login-sp-2);
    transition: all 240ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 14px var(--login-red-glow), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    letter-spacing: 0.08em;
    font-family: inherit;
}

/* 顶部光带 */
.login-btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}

.login-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px var(--login-red-glow), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    background: linear-gradient(135deg, #D42645 0%, var(--login-red) 100%);
}

.login-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--login-red-glow);
}

.login-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--login-text-tertiary);
    box-shadow: none;
}

.login-btn:focus-visible {
    outline: 2px solid var(--login-gold);
    outline-offset: 3px;
}

.btn-icon { display: inline-flex; align-items: center; transition: transform 200ms ease; }
.btn-icon .icon { width: 18px; height: 18px; }
.login-btn:hover:not(:disabled) .btn-icon { transform: translateX(3px); }

.btn-loader {
    display: none;
    gap: 4px;
    align-items: center;
}

.login-btn.loading .btn-text { display: none; }
.login-btn.loading .btn-icon { display: none; }
.login-btn.loading .btn-loader { display: inline-flex; }

.btn-loader-dot {
    width: 6px; height: 6px;
    background: white;
    border-radius: 50%;
    animation: loaderBounce 1.2s ease-in-out infinite;
}
.btn-loader-dot:nth-child(2) { animation-delay: 0.15s; }
.btn-loader-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes loaderBounce {
    0%, 80%, 100% { transform: scale(0.5); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* ========================================================================
   消息提示
   ======================================================================== */
.message {
    display: none;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 14px;
    border-radius: var(--login-radius);
    font-size: 0.85rem;
    margin-top: var(--login-sp-3);
    line-height: 1.5;
    animation: messageIn 0.3s ease;
}

.message .icon { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }
.message-text { flex: 1; }

.error-message {
    color: var(--login-error);
    background: var(--login-error-bg);
    border: 1px solid rgba(220, 38, 38, 0.18);
}
.error-message .icon { color: var(--login-error); }

.success-message {
    color: var(--login-success);
    background: var(--login-success-bg);
    border: 1px solid rgba(22, 163, 74, 0.18);
}
.success-message .icon { color: var(--login-success); }

@keyframes messageIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================================================
   分隔符
   ======================================================================== */
.login-divider {
    display: flex;
    align-items: center;
    gap: var(--login-sp-3);
    margin: var(--login-sp-5) 0 var(--login-sp-4);
    color: var(--login-text-tertiary);
    font-size: 0.78rem;
}

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

.login-divider span {
    letter-spacing: 0.2em;
    font-weight: 500;
}

/* ========================================================================
   快速登录
   ======================================================================== */
.quick-login {
    background: var(--login-surface-2);
    border: 1px solid var(--login-border);
    border-radius: var(--login-radius);
    padding: var(--login-sp-3) var(--login-sp-4);
    margin-bottom: var(--login-sp-4);
}

.quick-login-title {
    font-size: 0.75rem;
    color: var(--login-text-tertiary);
    font-weight: 500;
    margin-bottom: var(--login-sp-2);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.demo-creds {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.demo-cred-item {
    display: flex;
    align-items: center;
    gap: var(--login-sp-2);
    font-size: 0.82rem;
}

.demo-label {
    color: var(--login-text-tertiary);
    font-weight: 500;
    min-width: 50px;
}

.demo-value-wrap {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 1;
}

.demo-value {
    font-family: 'SF Mono', 'Consolas', monospace;
    color: var(--login-text-primary);
    font-weight: 600;
    background: var(--login-surface);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--login-border);
    font-size: 0.82rem;
}

.demo-value--muted {
    color: var(--login-text-tertiary);
    font-weight: 400;
    background: transparent;
    border: none;
    padding: 2px 0;
    font-family: inherit;
}

.copy-btn {
    width: 24px; height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--login-surface);
    border: 1px solid var(--login-border);
    color: var(--login-text-tertiary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 200ms ease;
    padding: 0;
}

.copy-btn:hover {
    color: var(--login-red);
    border-color: var(--login-red);
    background: var(--login-red-dim);
}

.copy-btn .icon { width: 12px; height: 12px; }

.copy-btn.copied {
    color: var(--login-success);
    border-color: var(--login-success);
}

/* ========================================================================
   底部
   ======================================================================== */
.login-footer {
    text-align: center;
    padding-top: var(--login-sp-3);
    border-top: 1px solid var(--login-border);
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}

.login-footer p {
    font-size: 0.85rem;
    color: var(--login-text-tertiary);
    margin: 0;
}

.login-footer a {
    color: var(--login-red);
    text-decoration: none;
    font-weight: 500;
    transition: color 200ms ease;
}

.login-footer a:hover {
    color: var(--login-deep-red);
    text-decoration: underline;
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--login-text-tertiary) !important;
    font-weight: 400;
    margin-top: 4px;
}

.back-home:hover {
    color: var(--login-red) !important;
    text-decoration: none !important;
}

.back-home .icon { width: 14px; height: 14px; transition: transform 200ms ease; }
.back-home:hover .icon { transform: translateX(-2px); }

/* ========================================================================
   弹窗
   ======================================================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--login-sp-4);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn { from { opacity: 0; } to { opacity: 1; } }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 26, 46, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--login-surface);
    border-radius: var(--login-radius-lg);
    padding: var(--login-sp-6);
    max-width: 28rem;
    width: 100%;
    max-height: calc(100vh - var(--login-sp-8));
    overflow-y: auto;
    box-shadow: var(--login-shadow-lg);
    animation: modalSlideIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes modalSlideIn {
    from { transform: translateY(20px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--login-sp-3);
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--login-text-primary);
}

.close-modal {
    width: 32px; height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--login-surface-2);
    border: 1px solid var(--login-border);
    color: var(--login-text-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 200ms ease;
    padding: 0;
}

.close-modal:hover {
    color: var(--login-red);
    border-color: var(--login-red);
    background: var(--login-red-dim);
}

.close-modal .icon { width: 16px; height: 16px; }

.modal-desc {
    font-size: 0.88rem;
    color: var(--login-text-tertiary);
    margin-bottom: var(--login-sp-4);
    line-height: 1.6;
}

.modal-input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    background: var(--login-surface);
    border: 1.5px solid var(--login-border);
    border-radius: var(--login-radius);
    color: var(--login-text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 200ms ease;
}

.modal-input:focus {
    outline: none;
    border-color: var(--login-red);
    box-shadow: 0 0 0 3px var(--login-red-dim);
}

.modal-actions {
    display: flex;
    gap: var(--login-sp-3);
    margin-top: var(--login-sp-5);
    justify-content: flex-end;
}

.btn-secondary, .btn-primary {
    height: 42px;
    padding: 0 var(--login-sp-5);
    border: none;
    border-radius: var(--login-radius);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 200ms ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
}

.btn-secondary {
    background: var(--login-surface-2);
    color: var(--login-text-secondary);
    border: 1px solid var(--login-border);
}
.btn-secondary:hover {
    background: var(--login-red-dim);
    color: var(--login-red);
    border-color: var(--login-red);
}

.btn-primary {
    background: linear-gradient(135deg, var(--login-red), var(--login-deep-red));
    color: white;
    box-shadow: 0 3px 10px var(--login-red-glow);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 14px var(--login-red-glow);
}
.btn-primary .icon { width: 16px; height: 16px; }

/* 密码强度条 */
.password-hint {
    display: none;
    align-items: center;
    gap: var(--login-sp-2);
    margin-top: 6px;
}
.password-hint.active { display: flex; }

.strength-bar {
    flex: 1;
    height: 4px;
    background: var(--login-border);
    border-radius: 2px;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    width: 0;
    background: var(--login-error);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.strength-fill.weak { background: var(--login-error); width: 25%; }
.strength-fill.fair { background: #F59E0B; width: 50%; }
.strength-fill.good { background: var(--login-gold); width: 75%; }
.strength-fill.strong { background: var(--login-success); width: 100%; }

#passwordStrengthLabel {
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 40px;
    text-align: right;
}

/* ========================================================================
   响应式
   ======================================================================== */
@media (max-width: 980px) {
    .login-container {
        grid-template-columns: 1fr;
        max-width: 30rem;
        margin: var(--login-sp-4);
    }
    .login-left {
        padding: var(--login-sp-8) var(--login-sp-6);
        min-height: 240px;
    }
    .login-left::after { display: none; }
    .login-deco { display: none; }
    .hero-title { font-size: 2rem; }
    .hero-features { grid-template-columns: 1fr 1fr; gap: 8px; }
    .hero-stats { gap: var(--login-sp-4); }
    .login-right { padding: var(--login-sp-6); }
}

@media (max-width: 640px) {
    .login-container { margin: 0; border-radius: 0; min-height: 100vh; max-width: 100%; }
    .login-left { padding: var(--login-sp-6) var(--login-sp-4); min-height: 200px; }
    .hero-brand { font-size: 0.65rem; }
    .hero-title { font-size: 1.65rem; }
    .hero-subtitle { font-size: 0.82rem; }
    .hero-quote { font-size: 0.85rem; }
    .hero-features { grid-template-columns: 1fr 1fr; }
    .feature-item { padding: 8px 10px; }
    .feature-text { font-size: 0.78rem; }
    .login-right { padding: var(--login-sp-5) var(--login-sp-4); }
    .login-header h2 { font-size: 1.4rem; }
    .role-selector { gap: 6px; }
    .role-card { padding: 10px 6px; }
    .role-name { font-size: 0.78rem; }
    .role-desc { display: none; }
}

@media (max-width: 420px) {
    .hero-features { grid-template-columns: 1fr; }
    .hero-stats { gap: var(--login-sp-3); }
    .hero-stat-item strong { font-size: 1.3rem; }
}

/* ========================================================================
   可访问性
   ======================================================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .login-bg-glow { animation: none; }
    .login-deco { animation: none; }
}

::selection { background: var(--login-red-dim); color: var(--login-deep-red); }