/* 通识模块样式 */
.gk-quotes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.gk-quote-card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.gk-quote-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.gk-quote-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1e293b;
    line-height: 1.6;
    font-family: "Songti SC", "SimSun", serif; /* 使用衬线体更有韵味 */
}

.gk-quote-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #64748b;
}

.gk-quote-author {
    font-weight: 600;
    color: #b45309;
}

.gk-quote-meaning {
    font-size: 0.95rem;
    color: #475569;
    padding-top: 0.8rem;
    border-top: 1px dashed rgba(148, 163, 184, 0.3);
}

/* 背诵卡片翻转效果 */
.gk-recite-container {
    max-width: 600px;
    margin: 2rem auto;
    perspective: 1000px;
}

.gk-recite-card {
    position: relative;
    width: 100%;
    min-height: 300px;
    cursor: pointer;
    transform-style: preserve-3d;
    transition: transform 0.6s;
}

.gk-recite-card.flipped {
    transform: rotateY(180deg);
}

.gk-card-front, .gk-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 24px;
    padding: 2rem;
    background: white;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.gk-card-front {
    background: linear-gradient(135deg, #fffdf5 0%, #fff7ed 100%);
}

.gk-card-back {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    transform: rotateY(180deg);
}

.gk-card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
    font-family: "Songti SC", "SimSun", serif;
}

.gk-recite-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.gk-recite-controls button {
    min-width: 100px;
    padding: 0.8rem 1.5rem;
    border-radius: 99px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
    color: white;
}

.gk-recite-controls button:hover {
    transform: translateY(-2px);
}

.btn-danger { background: #ef4444; box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3); }
.btn-warning { background: #f59e0b; box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3); }
.btn-success { background: #10b981; box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }

.gk-subview {
    display: none;
}

.gk-subview.active {
    display: block;
}

.gk-modules {
    margin-top: 1rem;
}

.pwa-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px;
    margin: 0 0 1.25rem 0;
    background: var(--surface-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.pwa-tab {
    appearance: none;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text);
    padding: 0.6rem 0.95rem;
    border-radius: 999px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.pwa-tab:hover {
    background: var(--surface);
    border-color: var(--border);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.pwa-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.pwa-tab:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.oxford-reader {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 1rem;
    min-height: 70vh;
    height: 70vh;
}

.oxford-sidebar {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 70vh;
    box-shadow: var(--shadow-sm);
}

.oxford-sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-muted);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.oxford-bookmarks {
    padding: 0.75rem 1rem 0.25rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}

.oxford-bookmarks-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.oxford-bookmarks-title {
    font-weight: 900;
    color: var(--text);
}

.oxford-bookmarks-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    max-height: 32vh;
    overflow: auto;
    padding-right: 0.15rem;
}

.oxford-bookmark-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.4rem;
    align-items: center;
}

.oxford-bookmark-jump {
    appearance: none;
    border: 1px solid transparent;
    background: rgba(var(--primary-rgb), 0.07);
    color: var(--text);
    text-align: left;
    padding: 0.55rem 0.7rem;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.oxford-bookmark-jump:hover {
    background: rgba(var(--primary-rgb), 0.10);
    border-color: rgba(var(--primary-rgb), 0.20);
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(var(--primary-rgb), 0.10);
}

.oxford-bookmark-del {
    appearance: none;
    border: 1px solid var(--border);
    background: var(--surface-muted);
    color: rgba(31, 41, 55, 0.85);
    width: 34px;
    height: 34px;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

.oxford-bookmark-del:hover {
    background: rgba(239, 68, 68, 0.10);
    border-color: rgba(239, 68, 68, 0.30);
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(239, 68, 68, 0.12);
}

.oxford-sidebar-section {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    background: var(--surface);
}

.oxford-sidebar-title {
    font-weight: 900;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.oxford-nav {
    padding: 0.5rem 0.25rem 0.75rem;
    overflow: auto;
    flex: 1;
}

.oxford-nav-group {
    padding: 0.5rem 0.75rem;
}

.oxford-nav-group-title {
    font-size: 0.9rem;
    font-weight: 900;
    color: rgba(30, 41, 59, 0.75);
    margin: 0.25rem 0 0.5rem;
}

.oxford-nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.oxford-nav-item {
    appearance: none;
    border: 1px solid transparent;
    background: transparent;
    text-align: left;
    padding: 0.65rem 0.75rem;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 750;
    color: rgba(31, 41, 55, 0.9);
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}

.oxford-nav-item:hover {
    background: rgba(var(--primary-rgb), 0.08);
    border-color: rgba(var(--primary-rgb), 0.20);
    transform: translateY(-1px);
}

.oxford-nav-item.active {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.18), rgba(var(--primary-rgb), 0.08));
    border-color: rgba(var(--primary-rgb), 0.35);
    box-shadow: 0 10px 22px rgba(var(--primary-rgb), 0.14);
}

.oxford-main {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 70vh;
    box-shadow: var(--shadow-sm);
}

.oxford-toolbar {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-muted);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.oxford-toolbar-left,
.oxford-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.oxford-book-meta {
    font-weight: 850;
    color: rgba(31, 41, 55, 0.85);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: min(520px, 60vw);
}

#oxfordRendition {
    flex: 1;
    overflow: auto;
    background: white;
    min-height: 0;
    position: relative;
}

#gkOxfordView[data-oxford-theme="night"] #oxfordRendition {
    background: #0b1220;
}

#oxfordRendition iframe {
    border: 0;
}

.oxford-empty {
    padding: 2rem;
    color: rgba(31, 41, 55, 0.75);
    font-weight: 650;
}

@media (max-width: 900px) {
    .oxford-reader {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 70vh;
    }
    .oxford-sidebar,
    .oxford-main {
        height: auto;
        min-height: 0;
    }
    #oxfordRendition {
        min-height: 60vh;
    }
    .oxford-book-meta {
        max-width: 100%;
    }
}