/* 登录页 — 与全站线框图标、主色协调 */

.login-page {
    min-height: 100vh;
    margin: 0;
    font-family: var(--font-family);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(20px, 4vw, 40px);
    position: relative;
    overflow-x: hidden;
    background: #0f1419;
}

.login-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 120% 80% at 50% -20%, rgba(64, 158, 255, 0.35) 0%, transparent 55%),
        radial-gradient(ellipse 90% 60% at 100% 50%, rgba(102, 177, 255, 0.12) 0%, transparent 45%),
        radial-gradient(ellipse 70% 50% at 0% 80%, rgba(64, 158, 255, 0.08) 0%, transparent 40%),
        linear-gradient(165deg, #0f1419 0%, #151d28 45%, #0c1016 100%);
    pointer-events: none;
}

.login-bg-accent {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 70%);
    pointer-events: none;
}

.login-main {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.login-panel {
    width: 100%;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 16px;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.8) inset,
        0 24px 48px -12px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(0, 0, 0, 0.04);
    padding: clamp(28px, 5vw, 40px) clamp(24px, 4vw, 36px);
    backdrop-filter: blur(12px);
}

.login-brand {
    text-align: center;
    margin-bottom: 28px;
}

.login-brand-badge {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, rgba(64, 158, 255, 0.12) 0%, rgba(64, 158, 255, 0.04) 100%);
    border: 1px solid rgba(64, 158, 255, 0.22);
    box-shadow: 0 4px 14px rgba(64, 158, 255, 0.15);
}

.login-brand-icon {
    width: 26px;
    height: 26px;
    color: var(--primary-color);
}

.login-title {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.3;
}

.login-subtitle {
    margin: 8px 0 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    font-weight: 400;
}

.login-error {
    display: none;
    padding: 10px 14px;
    margin-bottom: 18px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.45;
    text-align: left;
    background: #fef0f0;
    color: #cf1322;
    border: 1px solid rgba(245, 108, 108, 0.35);
}

.login-error:not([hidden]) {
    display: block;
}

.login-form {
    text-align: left;
}

.login-field {
    margin-bottom: 18px;
}

.login-field:last-of-type {
    margin-bottom: 22px;
}

.login-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.login-input-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.login-input-wrap:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(64, 158, 255, 0.15);
}

.login-input-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    color: var(--text-light);
    transition: color 0.2s ease;
}

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

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

.login-input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    padding: 13px 14px 13px 2ch;
    font-size: 15px;
    font-family: inherit;
    color: var(--text-primary);
    background: transparent;
}

.login-input::placeholder {
    color: var(--text-light);
}

.login-submit {
    width: 100%;
    position: relative;
    border: none;
    border-radius: 10px;
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(180deg, var(--primary-hover) 0%, var(--primary-color) 100%);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.2) inset,
        0 4px 14px rgba(64, 158, 255, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.login-submit:hover:not(:disabled) {
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.25) inset,
        0 8px 22px rgba(64, 158, 255, 0.42);
    transform: translateY(-1px);
}

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

.login-submit:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

.login-submit:disabled {
    cursor: not-allowed;
    opacity: 0.85;
}

.login-submit-text,
.login-submit-loading {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-submit.is-loading .login-submit-text {
    display: none;
}

.login-submit.is-loading .login-submit-loading {
    display: inline-flex !important;
}

.login-submit:not(.is-loading) .login-submit-loading {
    display: none !important;
}

.login-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: login-spin 0.65s linear infinite;
}

@keyframes login-spin {
    to { transform: rotate(360deg); }
}

.login-footnote {
    margin: 0;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.38);
    text-align: center;
    max-width: 360px;
    line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
    .login-submit:hover:not(:disabled) {
        transform: none;
    }
    .login-spinner {
        animation: none;
        border-color: rgba(255, 255, 255, 0.6);
    }
}