/* 登录页 — 卡密验证管理后台 */

.login-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ---- 背景装饰 ---- */
.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    background: var(--bg);
}

.login-bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: loginBlobFloat 18s ease-in-out infinite;
}

.login-bg-blob-1 {
    width: 520px;
    height: 520px;
    background: var(--primary);
    top: -120px;
    left: -80px;
}

.login-bg-blob-2 {
    width: 420px;
    height: 420px;
    background: #8b5cf6;
    bottom: -100px;
    right: 10%;
    animation-delay: -6s;
}

.login-bg-blob-3 {
    width: 280px;
    height: 280px;
    background: #06b6d4;
    top: 40%;
    right: -60px;
    animation-delay: -12s;
    opacity: 0.25;
}

[data-theme="dark"] .login-bg-blob-2 { opacity: 0.35; }
[data-theme="minimal"] .login-bg-blob { opacity: 0.2; }

@keyframes loginBlobFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 15px) scale(0.95); }
}

.login-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border-light) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 70% at 30% 50%, black 20%, transparent 70%);
    opacity: 0.35;
}

/* ---- 主题切换 ---- */
.login-theme-bar {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.login-theme-bar .theme-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}

.login-theme-bar .theme-btn:hover {
    transform: scale(1.1);
}

.login-theme-bar .theme-btn[data-theme-pick="business"] { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.login-theme-bar .theme-btn[data-theme-pick="dark"] { background: linear-gradient(135deg, #6366f1, #312e81); }
.login-theme-bar .theme-btn[data-theme-pick="minimal"] { background: linear-gradient(135deg, #fafafa, #a1a1aa); }

/* ---- 主布局 ---- */
.login-page {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    padding: 1.5rem;
    gap: 1.5rem;
}

.login-brand {
    flex: 1.1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 2.5rem;
    border-radius: 24px;
    background: var(--primary-gradient);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.login-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%);
}

.login-brand-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255,255,255,0.06) 45%,
        rgba(255,255,255,0.12) 50%,
        rgba(255,255,255,0.06) 55%,
        transparent 60%
    );
    animation: loginShine 8s ease-in-out infinite;
}

@keyframes loginShine {
    0%, 100% { transform: translateX(-30%) rotate(0deg); }
    50% { transform: translateX(30%) rotate(0deg); }
}

.login-brand-content {
    position: relative;
    z-index: 1;
    max-width: 420px;
}

.login-brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
}

.login-brand-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.75rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    backdrop-filter: blur(8px);
}

.login-brand h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.875rem;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.login-brand-desc {
    font-size: 0.9375rem;
    opacity: 0.88;
    line-height: 1.7;
    margin: 0 0 2rem;
}

.login-features {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.login-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    opacity: 0.92;
}

.login-features li i {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: rgba(255,255,255,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* ---- 登录卡片 ---- */
.login-panel {
    flex: 0 0 min(480px, 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.25rem 2rem 2rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    animation: loginCardIn 0.5s ease-out;
}

@keyframes loginCardIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card-header {
    margin-bottom: 1.75rem;
}

.login-card-header h2 {
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.375rem;
    letter-spacing: -0.03em;
}

.login-card-header .subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.login-error {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    background: var(--danger-bg);
    color: var(--danger);
    padding: 0.875rem 1rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
    border: 1px solid rgba(220, 38, 38, 0.12);
    animation: loginShake 0.4s ease;
}

.login-error i {
    margin-top: 0.125rem;
    flex-shrink: 0;
}

@keyframes loginShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.login-form .form-group {
    margin-bottom: 1.125rem;
}

.login-form label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

.input-wrap > i.field-icon {
    position: absolute;
    left: 0.875rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
    pointer-events: none;
    transition: color 0.15s;
}

.input-wrap input {
    width: 100%;
    padding: 0.75rem 0.875rem 0.75rem 2.625rem;
    border: 1px solid var(--input-border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text);
    font-size: 0.9375rem;
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.input-wrap input::placeholder {
    color: var(--text-muted);
}

.input-wrap input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}

.input-wrap:focus-within > i.field-icon {
    color: var(--primary);
}

.input-wrap.has-toggle input {
    padding-right: 2.75rem;
}

.btn-toggle-pwd {
    position: absolute;
    right: 0.5rem;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s, background 0.15s;
}

.btn-toggle-pwd:hover {
    color: var(--primary);
    background: var(--primary-soft);
}

.captcha-row {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
}

.captcha-row .input-wrap {
    flex: 1;
    min-width: 0;
}

.captcha-box {
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--input-bg);
    transition: border-color 0.15s, box-shadow 0.15s;
    cursor: pointer;
}

.captcha-box:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.captcha-box img {
    display: block;
    height: 44px;
    width: auto;
}

.captcha-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0.375rem 0 0;
}

.btn-login-submit {
    width: 100%;
    padding: 0.8125rem 1rem;
    margin-top: 0.75rem;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

[data-theme="dark"] .btn-login-submit {
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-login-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.btn-login-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-login-submit:disabled {
    opacity: 0.75;
    cursor: wait;
}

.btn-login-submit .fa-spinner {
    animation: loginSpin 0.8s linear infinite;
}

@keyframes loginSpin {
    to { transform: rotate(360deg); }
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 1.25rem;
    color: var(--text-muted);
    font-size: 0.75rem;
}

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

.login-footer-link {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.login-footer-link a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.15s;
}

.login-footer-link a:hover {
    opacity: 0.85;
    text-decoration: underline;
}

.login-secure-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    margin-top: 1.25rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.login-secure-note i {
    color: var(--success);
    font-size: 0.6875rem;
}

/* ---- 响应式 ---- */
@media (max-width: 960px) {
    .login-page {
        flex-direction: column;
        padding: 1rem;
        padding-top: 4rem;
    }

    .login-brand {
        flex: none;
        padding: 2rem 1.5rem;
    }

    .login-brand h1 {
        font-size: 1.5rem;
    }

    .login-features {
        display: none;
    }

    .login-panel {
        flex: 1;
        padding: 0;
    }
}

@media (max-width: 480px) {
    .login-theme-bar {
        top: 0.75rem;
        right: 0.75rem;
    }

    .login-brand {
        padding: 1.5rem 1.25rem;
        border-radius: 16px;
    }

    .login-brand-icon {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .login-brand h1 {
        font-size: 1.25rem;
    }

    .login-brand-desc {
        font-size: 0.8125rem;
        margin-bottom: 0;
    }

    .login-brand-badge {
        margin-bottom: 1rem;
    }

    .login-card {
        padding: 1.75rem 1.25rem 1.5rem;
        border-radius: 16px;
    }
}