:root {
    --primary: #8b7355;
    --accent: #c9a86c;
    --dark: #1a1a1a;
    --light: #f8f6f3;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Serif SC', 'Georgia', serif;
    background: var(--dark);
    color: var(--light);
    min-height: 100vh;
    overflow: hidden;
}

.app {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 背景层 */
.bg-layer {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.bg-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: opacity 1s ease;
    animation: slowZoom 20s ease-in-out infinite alternate;
}

@keyframes slowZoom {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

.bg-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
}

.bg-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.15) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
}

/* 主内容 */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    position: relative;
    z-index: 10;
}

.verse-container {
    max-width: 680px;
    text-align: center;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.verse-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 24px;
    opacity: 0.9;
}

.verse-icon svg {
    width: 40px;
    height: 40px;
}

.verse-text {
    font-size: clamp(1.4rem, 4vw, 1.9rem);
    line-height: 1.8;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.8),
        0 4px 20px rgba(0, 0, 0, 0.6),
        0 0 40px rgba(0, 0, 0, 0.4);
    margin-bottom: 12px;
    quotes: """ """ "'" "'";
}

.verse-zh {
    font-family: 'Noto Serif SC', 'Georgia', serif;
}

.verse-en {
    font-family: 'Playfair Display', 'Georgia', serif;
    font-size: clamp(1.15rem, 3vw, 1.5rem);
    opacity: 0.95;
    font-style: italic;
    font-weight: 500;
}

.verse-text::before {
    content: open-quote;
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.6;
    vertical-align: -0.3em;
    margin-right: 4px;
}

.verse-text::after {
    content: close-quote;
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.6;
    vertical-align: -0.3em;
    margin-left: 4px;
}


.verse-ref {
    display: block;
    font-size: 1.05rem;
    color: var(--accent);
    font-style: normal;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}

.verse-divider {
    width: 60px;
    height: 1px;
    background: var(--accent);
    opacity: 0.4;
    margin: 20px auto;
}

/* 底部控制栏 */
.controls {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 24px;
    background: linear-gradient(to top, rgba(0,0,0,0.5), transparent);
}

.ctrl-btn {
    width: 52px;
    height: 52px;
    border: 1.5px solid rgba(255,255,255,0.25);
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    color: var(--light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.ctrl-btn:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--accent);
    transform: scale(1.08);
}

.ctrl-btn:active {
    transform: scale(0.95);
}

.ctrl-btn svg {
    width: 22px;
    height: 22px;
}

.lang-btn .lang-text {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* 响应式 */
@media (max-width: 480px) {
    .verse-icon { font-size: 2rem; }
    .verse-text::before,
    .verse-text::after { font-size: 2rem; }
    .controls { padding: 20px 16px; }
    .ctrl-btn { width: 46px; height: 46px; }
}


/* Toast提示 */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.95);
    color: #333;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    z-index: 100;
    animation: toastFade 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

@keyframes toastFade {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}