/* 基础样式 - 图书管理系统 */

:root {
    --color-brand-primary: #EC4899;
    --color-brand-primary-hover: #DB2777;
    --color-brand-accent: #a855f7;
    --color-brand-deep: #831843;
    --color-brand-primary-rgb: 236, 72, 153;
    --color-brand-accent-rgb: 168, 85, 247;
    --color-brand-deep-rgb: 131, 24, 67;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Cormorant', serif;
}

:is(a, button, input, select, textarea, [tabindex]:not([tabindex="-1"])):focus-visible {
    outline: 3px solid rgba(var(--color-brand-deep-rgb), 0.75);
    outline-offset: 3px;
    box-shadow: 0 0 0 5px rgba(var(--color-brand-primary-rgb), 0.16);
}

/* 玻璃态面板效果 */
.glass-panel {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(249, 168, 212, 0.3);
}

/* ==================== 页脚链接 ==================== */
.footer-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: rgba(131, 24, 67, 0.5);
    cursor: pointer;
    transition: color 0.25s ease, background 0.25s ease;
}
.footer-link:hover {
    color: var(--color-brand-primary);
    background: rgba(var(--color-brand-primary-rgb), 0.06);
}
.footer-link-icon {
    width: 13px;
    height: 13px;
    opacity: 0.85;
    transition: transform 0.3s ease;
}
.footer-link:hover .footer-link-icon {
    transform: scale(1.1);
}

.footer-dot {
    width: 3px;
    height: 3px;
    border-radius: 9999px;
    background: rgba(249, 168, 212, 0.8);
    flex-shrink: 0;
}

/* Tooltip 卡片 */
.footer-tooltip {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    width: max-content;
    max-width: min(20rem, calc(100vw - 2rem));
    padding: 12px 14px;
    background: #ffffff;
    border: 1px solid rgba(249, 168, 212, 0.45);
    border-radius: 14px;
    box-shadow:
        0 12px 32px -8px rgba(236, 72, 153, 0.18),
        0 4px 12px -4px rgba(131, 24, 67, 0.08);
    text-align: left;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
    z-index: 50;
}
.footer-link:hover .footer-tooltip,
.footer-link:focus-within .footer-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s;
}
.footer-tooltip-arrow {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 6px;
    overflow: hidden;
}
.footer-tooltip-arrow::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: #ffffff;
    border: 1px solid rgba(249, 168, 212, 0.45);
    transform: translateX(-50%) rotate(45deg);
}

/* 顶部导航：全程不透明，避免滚动内容穿透 */
.nav-glass {
    background: #ffffff;
    border: 1px solid rgba(249, 168, 212, 0.45);
    box-shadow: 0 8px 24px -10px rgba(var(--color-brand-primary-rgb), 0.18),
                0 2px 8px -2px rgba(var(--color-brand-deep-rgb), 0.06);
}

/* 滚动时整个 header 平滑收起；上滑或回到顶部再恢复 */
header.site-header {
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    will-change: transform;
}

header.site-header.is-hidden {
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
}

/* 主按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--color-brand-primary) 0%, var(--color-brand-primary-hover) 100%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(var(--color-brand-primary-rgb), 0.4);
}

/* 导航链接效果 */
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-brand-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-avatar {
    width: 40px; height: 40px; flex-shrink: 0;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-accent));
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 0 0 2.5px rgba(255,255,255,0.85), 0 0 0 4.5px rgba(var(--color-brand-primary-rgb),0.15);
    overflow: hidden;
    transition: transform 0.25s cubic-bezier(0.22,1,0.36,1), box-shadow 0.25s;
    cursor: pointer;
}
.nav-avatar:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 2.5px rgba(255,255,255,0.9), 0 0 0 5px rgba(var(--color-brand-primary-rgb),0.25), 0 6px 16px -6px rgba(var(--color-brand-primary-rgb),0.3);
}
.nav-avatar-img { width: 100%; height: 100%; object-fit: cover; }
.nav-avatar-letter {
    font-size: 1.1rem; font-weight: 700; color: #fff;
    font-family: 'Cormorant', serif;
    line-height: 1;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #FDF2F8;
}

::-webkit-scrollbar-thumb {
    background: #F9A8D4;
    border-radius: 10px;
    border: 2px solid #FDF2F8;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-brand-primary);
}

/* 移动端优化 */
@media (max-width: 768px) {
    /* 移除300ms点击延迟 */
    * {
        touch-action: manipulation;
    }

    /* 防止意外缩放 */
    input, textarea, select {
        font-size: 16px !important;
    }

    /* 优化触摸目标 */
    .touch-target {
        min-height: 44px;
        min-width: 44px;
    }
}

/* 减少动画在移动端的使用 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* 隐藏横向滚动条但保持滚动功能 */
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
.scrollbar-hide::-webkit-scrollbar { display: none; }

/* 自定义细滚动条 */
.scrollbar-thin {
    scrollbar-width: thin;
    scrollbar-color: rgba(139, 92, 246, 0.3) transparent;
}
.scrollbar-thin::-webkit-scrollbar { width: 6px; }
.scrollbar-thin::-webkit-scrollbar-track { background: transparent; }
.scrollbar-thin::-webkit-scrollbar-thumb {
    background: rgba(139, 92, 246, 0.3);
    border-radius: 3px;
}
.scrollbar-thin::-webkit-scrollbar-thumb:hover { background: rgba(139, 92, 246, 0.5); }
/* 布局容器 */
.page-shell, .admin-shell, .records-shell { max-width: 1200px; margin: 0 auto; }
.card, .panel { background: rgba(255,255,255,.86); border: 1px solid rgba(var(--color-brand-primary-rgb),.14); border-radius: 1rem; }

/* ==================== Kickout 弹窗 ==================== */
@keyframes kickoutFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes kickoutPopIn {
    0%   { opacity: 0; transform: scale(0.85) translateY(20px); }
    60%  { opacity: 1; transform: scale(1.03) translateY(-4px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes kickoutPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.55); }
    50%      { box-shadow: 0 0 0 18px rgba(244, 63, 94, 0); }
}
@keyframes kickoutCountdown {
    from { stroke-dashoffset: 0; }
    to   { stroke-dashoffset: 138.23; }
}
.kickout-overlay {
    position: fixed; inset: 0; z-index: 99999;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    padding: 1rem;
    animation: kickoutFadeIn 0.25s ease-out both;
}
.kickout-card {
    background: #ffffff;
    border-radius: 1.75rem;
    box-shadow: 0 30px 80px -20px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.6);
    max-width: 26rem; width: 100%;
    padding: 2.25rem 1.75rem 1.75rem;
    text-align: center;
    animation: kickoutPopIn 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.kickout-icon-wrap {
    width: 76px; height: 76px;
    margin: 0 auto 1.25rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, #fb7185, #e11d48);
    display: flex; align-items: center; justify-content: center;
    animation: kickoutPulse 1.6s ease-out infinite;
}
.kickout-icon-wrap svg { width: 40px; height: 40px; color: #fff; }
.kickout-title {
    font-size: 1.25rem; font-weight: 700;
    color: #0f172a; margin-bottom: 0.5rem; letter-spacing: 0.02em;
}
.kickout-msg {
    font-size: 0.95rem; color: #475569;
    line-height: 1.6; margin-bottom: 1.5rem;
}
.kickout-countdown {
    position: relative; width: 50px; height: 50px; margin: 0 auto 1.25rem;
}
.kickout-countdown svg { transform: rotate(-90deg); }
.kickout-countdown-num {
    position: absolute; inset: 0; display: flex;
    align-items: center; justify-content: center;
    font-weight: 700; color: #e11d48; font-size: 1.05rem;
}
.kickout-btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; width: 100%;
    padding: 0.75rem 1.25rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, #f43f5e, #be123c);
    color: #ffffff; font-weight: 600; font-size: 0.95rem;
    border: none; cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 10px 25px -10px rgba(225, 29, 72, 0.6);
}
.kickout-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px -10px rgba(225, 29, 72, 0.7); }
.kickout-btn:active { transform: translateY(0); }