/* 登录页 — 全屏视频背景 + 垂直居中登录条（Video-First Hero） */

body.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #05080f;
    font-family: var(--font-body);
    color: var(--text-primary);
    overflow: hidden;
}

/* ============================================
   全屏视频背景
   ============================================ */
.login-container {
    width: 100vw;
    height: 100vh;
    position: relative;
    display: flex;
    /* 顶部居中（红框区），让出银河主画面 */
    align-items: flex-start;
    justify-content: center;
    padding: 5.5vh 4vw 0;
    box-sizing: border-box;
}

.login-image-panel {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    background: #05080f;
}

.login-bg-video,
.login-bg-fallback,
.login-image-panel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

.login-bg-fallback {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.login-bg-video {
    position: absolute;
    inset: 0;
    z-index: 1;
}

/* reduced-motion：只留海报 */
body.login-reduced-motion .login-bg-video {
    display: none !important;
}
@media (prefers-reduced-motion: reduce) {
    .login-bg-video {
        display: none !important;
    }
}

.login-image-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    /* 四周压暗，中间略透，保证表单对比度且不吃掉银河 */
    background:
        radial-gradient(ellipse 70% 55% at 50% 48%, rgba(5, 8, 15, 0.18) 0%, rgba(5, 8, 15, 0.45) 70%, rgba(5, 8, 15, 0.62) 100%),
        linear-gradient(to bottom, rgba(5, 8, 15, 0.28) 0%, transparent 35%, transparent 65%, rgba(5, 8, 15, 0.35) 100%);
    z-index: 2;
    pointer-events: none;
}

.login-image-panel::after {
    display: none;
}

/* ============================================
   登录条（顶部居中 · 默认淡、悬停/聚焦高亮）
   ============================================ */
.login-card {
    position: relative;
    z-index: 10;
    width: fit-content;
    max-width: 92vw;
    margin: 0 auto;
    padding: 12px 16px;
    justify-content: center;
    background: rgba(8, 12, 22, 0.28);
    backdrop-filter: blur(10px) saturate(1.1);
    -webkit-backdrop-filter: blur(10px) saturate(1.1);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    box-shadow:
        0 6px 20px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    /* 默认半透明；仅 :hover 高亮（勿用 animation 锁 opacity，否则悬停失效） */
    opacity: 0.38;
    transition:
        opacity 0.22s ease,
        background 0.22s ease,
        border-color 0.22s ease,
        box-shadow 0.22s ease,
        backdrop-filter 0.22s ease;
    animation: loginCardIn 0.45s cubic-bezier(0.25, 1, 0.5, 1) both;
    isolation: isolate;
}

.login-card:hover {
    opacity: 1;
    background: rgba(8, 12, 22, 0.72);
    backdrop-filter: blur(18px) saturate(1.25);
    -webkit-backdrop-filter: blur(18px) saturate(1.25);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(59, 130, 246, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

@keyframes loginCardIn {
    from { transform: translateY(-10px); }
    to   { transform: translateY(0); }
}

.login-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 10px;
    text-align: left;
    margin: 0;
    flex: 0 0 auto;
}

.login-logo {
    width: 32px;
    height: 32px;
    margin: 0;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-blue);
}

.login-logo img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.login-header-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.login-header h1 {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    color: #f3f6ff;
    letter-spacing: -0.02em;
    margin: 0;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.55);
    white-space: nowrap;
}

.login-header p {
    font-size: 11px;
    color: rgba(226, 232, 240, 0.65);
    letter-spacing: 0.2px;
    margin: 0;
    white-space: nowrap;
}

/* ============================================
   Form — 一行横排
   ============================================ */
.login-body {
    flex: 0 0 auto;
    min-width: 0;
    width: fit-content;
}

.login-card #loginForm {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    flex-wrap: nowrap;
    width: fit-content;
}

.login-card .form-group {
    margin-bottom: 0;
    flex: 0 0 168px;
    width: 168px;
    min-width: 0;
    max-width: none;
}

.login-card .form-group-check {
    flex: 0 0 auto;
    width: auto;
    white-space: nowrap;
    padding: 0;
}

.login-card .form-group-submit {
    flex: 0 0 auto;
    width: auto;
    margin: 0;
}

.login-card .form-label {
    display: none;
}

.login-card .form-control {
    width: 100%;
    min-width: 0;
    padding: 10px 12px;
    font-size: 13px;
    font-family: var(--font-body);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 10px;
    color: #f8fafc;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
    outline: none;
}

.login-card .form-control:hover {
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.09);
}

.login-card .form-control:focus {
    border-color: rgba(96, 165, 250, 0.75);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.22);
}

.login-card .form-control::placeholder {
    color: rgba(226, 232, 240, 0.45);
}

.login-card .form-check {
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0;
    padding: 0;
}

.login-card .form-check-input {
    width: 15px;
    height: 15px;
    cursor: pointer;
    accent-color: var(--accent);
}

.login-card .form-check-label {
    font-size: 12px;
    color: rgba(226, 232, 240, 0.7);
    cursor: pointer;
}

/* ============================================
   Button
   ============================================ */
.login-card .btn-primary {
    width: auto;
    min-width: 0;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-body);
    color: #fff;
    background: linear-gradient(180deg, var(--blue-400) 0%, var(--blue-500) 100%);
    border: 1px solid rgba(96, 165, 250, 0.35);
    border-radius: 10px;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-blue);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.login-card .btn-primary:hover:not(:disabled) {
    background: linear-gradient(180deg, var(--blue-300) 0%, var(--blue-400) 100%);
    transform: translateY(-1px);
}

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

.login-card .btn-primary:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.login-card .btn-block {
    width: auto !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
}

/* ============================================
   Footer
   ============================================ */
.login-footer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    gap: 2px;
    margin: 0;
    padding: 0;
    border-top: none;
    font-size: 10px;
    color: rgba(226, 232, 240, 0.35);
    flex: 0 0 auto;
}

.login-footer p {
    margin: 0;
    white-space: nowrap;
    font-size: 9px;
    opacity: 0.7;
}

.login-footer .login-reset-btn {
    background: none;
    border: none;
    color: rgba(226, 232, 240, 0.45);
    font-size: 10px;
    cursor: pointer;
    padding: 2px 6px;
    opacity: 0.85;
}

.login-footer .login-reset-btn:hover {
    opacity: 1;
    color: rgba(226, 232, 240, 0.85);
}

.theme-toggle-btn {
    background: rgba(8, 12, 22, 0.35);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: rgba(226, 232, 240, 0.55);
    transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.16);
    color: #f8fafc;
}

/* ============================================
   Loading
   ============================================ */
.login-card .btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
}

.login-card .btn-primary.loading {
    color: transparent;
}

.login-card .btn-primary.loading .btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card .loading-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
    border-radius: 50%;
    animation: loginSpin 0.7s linear infinite;
}

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

/* ============================================
   Mobile — 窄屏仍可换行，优先落在下方
   ============================================ */
@media (max-width: 700px) {
    .login-container {
        align-items: flex-start;
        justify-content: center;
        padding: 4vh 12px 0;
    }

    .login-bg-video,
    .login-bg-fallback,
    .login-image-panel img {
        object-position: center center;
    }

    .login-card {
        width: auto;
        max-width: 96vw;
        padding: 14px;
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .login-card #loginForm {
        flex-wrap: wrap;
        gap: 10px;
    }

    .login-card .form-group {
        flex: 1 1 calc(50% - 6px);
        min-width: 120px;
    }

    .login-card .form-group-check {
        flex: 1 1 auto;
    }

    .login-card .form-group-submit {
        flex: 1 1 100%;
    }

    .login-card .btn-primary,
    .login-card .btn-block {
        width: 100%;
    }

    .login-header {
        justify-content: center;
    }

    .login-header h1 {
        font-size: 14px;
    }

    .login-footer {
        align-items: center;
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .login-card,
    .login-card .loading-spinner,
    .login-card .btn-primary {
        animation: none !important;
    }
    .login-card {
        opacity: 0.38;
    }
    .login-card:hover {
        opacity: 1;
    }
}

/* 触屏无悬停：保持半透明，点进输入框时略提亮便于输入 */
@media (hover: none) {
    .login-card {
        opacity: 0.45;
    }
    .login-card:focus-within {
        opacity: 0.92;
    }
}

/* Particle aurora canvas（保留节点，图片盖住） */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0;
}

.login-footer-reset-wrap {
    display: none;
}

/* Light theme — 登录页仍以暗色图为主，略提亮控件 */
[data-theme="light"] body.login-page {
    background: #05080f;
    color: #f8fafc;
}

[data-theme="light"] .login-image-panel::before {
    background:
        radial-gradient(ellipse 70% 55% at 50% 48%, rgba(5, 8, 15, 0.2) 0%, rgba(5, 8, 15, 0.5) 70%, rgba(5, 8, 15, 0.65) 100%),
        linear-gradient(to bottom, rgba(5, 8, 15, 0.3) 0%, transparent 35%, transparent 65%, rgba(5, 8, 15, 0.4) 100%);
}

[data-theme="light"] .login-card {
    background: rgba(8, 12, 22, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

[data-theme="light"] .login-header h1 {
    color: #f8fafc;
}

[data-theme="light"] .login-header p,
[data-theme="light"] .login-footer p {
    color: rgba(226, 232, 240, 0.65);
}

[data-theme="light"] .form-control {
    background: rgba(255, 255, 255, 0.1);
    color: #f8fafc;
    border-color: rgba(255, 255, 255, 0.22);
}

[data-theme="light"] .login-reset-btn {
    color: rgba(226, 232, 240, 0.55);
}

[data-theme="light"] .login-reset-btn:hover {
    color: #93c5fd;
}

[data-theme="light"] .theme-toggle-btn {
    background: rgba(8, 12, 22, 0.35);
    border-color: rgba(255, 255, 255, 0.12);
    color: rgba(226, 232, 240, 0.7);
}

@media not all and (color-gamut: p3) {
    .login-card {
        background: rgba(8, 12, 22, 0.62);
        border: 1px solid rgba(255, 255, 255, 0.12);
        box-shadow:
            0 12px 36px rgba(0, 0, 0, 0.38),
            inset 0 1px 0 rgba(255, 255, 255, 0.06);
    }

    .login-card .form-control {
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.16);
    }
}