/* ── 分享海报页面 ── */
.poster-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: #eff0f6;
    min-height: 100vh;
}

/* ── 操作栏 ── */
.poster-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    width: 100%;
    max-width: 780px;
    flex-wrap: wrap;
}

.poster-controls-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.poster-hint {
    font-size: 0.88rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    font-family: var(--font-sans);
}

.btn-download:hover {
    background: #dd7520;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-download:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
}

.btn-back-support {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-back-support:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ── 海报主体 ── */
#poster {
    width: 750px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 24px 80px rgba(79,46,180,0.16), 0 6px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    flex-shrink: 0;
}

/* ── 海报头部 — aurora 深空风格 ── */
.poster-header {
    background: linear-gradient(140deg, #0d0221 0%, #1e0750 22%, #1a1060 50%, #0e2472 75%, #061840 100%);
    padding: 28px 36px 26px;
    position: relative;
    overflow: hidden;
}

.poster-header::before {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(139,92,246,0.3) 0%, transparent 62%);
    top: -220px;
    right: -80px;
    pointer-events: none;
}

.poster-header::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6,182,212,0.22) 0%, transparent 65%);
    bottom: -120px;
    left: 20px;
    pointer-events: none;
}

.poster-header-inner {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.poster-brand-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.poster-logo-text {
    font-size: 2.2rem;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: 0.02em;
    line-height: 1;
}

.poster-logo-text span {
    color: #c084fc;
}

.poster-tagline {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.58);
    letter-spacing: 0.1em;
}

.poster-platform-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.poster-platform-tag {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.88);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
}

/* ── 思维导图区域 ── */
.poster-mindmap-area {
    background: #ffffff;
    border-bottom: 1px solid #f0f0f8;
}

.poster-mindmap-area svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ── 统计栏 ── */
.poster-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #ffffff;
    border-top: 1px solid #f0f0f8;
    border-bottom: 1px solid #f0f0f8;
}

.poster-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 18px 8px;
    border-right: 1px solid #f0f0f8;
}

.poster-stat-item:last-child {
    border-right: none;
}

.poster-stat-item:nth-child(1) .poster-stat-val { color: #4f46e5; }
.poster-stat-item:nth-child(2) .poster-stat-val { color: #7c3aed; }
.poster-stat-item:nth-child(3) .poster-stat-val { color: #0891b2; }
.poster-stat-item:nth-child(4) .poster-stat-val { color: #059669; }

.poster-stat-val {
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 5px;
}

.poster-stat-label {
    font-size: 0.75rem;
    color: #9ca3af;
    white-space: nowrap;
    letter-spacing: 0.04em;
}

/* ── 底部 ── */
.poster-footer {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: linear-gradient(135deg, #0d0221 0%, #1a0e50 50%, #0e1840 100%);
    color: rgba(255,255,255,0.8);
    font-size: 0.82rem;
    gap: var(--spacing-md);
}

.poster-footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, #7c3aed 0%, #06b6d4 50%, #7c3aed 100%);
    opacity: 0.65;
}

.poster-footer-left {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.poster-footer-site {
    font-weight: 700;
    color: #c084fc;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
}

.poster-footer-desc {
    color: rgba(255,255,255,0.42);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
}

.poster-footer-badge {
    display: flex;
    gap: 6px;
}

.poster-footer-badge span {
    background: rgba(192,132,252,0.1);
    border: 1px solid rgba(192,132,252,0.25);
    padding: 3px 11px;
    border-radius: 14px;
    font-size: 0.73rem;
    color: rgba(192,132,252,0.88);
}

/* ── 响应式 ── */
@media (max-width: 820px) {
    .poster-page {
        padding: var(--spacing-md) 0;
        align-items: flex-start;
        overflow-x: auto;
    }

    #poster {
        margin: 0 auto;
        border-radius: var(--radius-lg);
    }

    .poster-controls {
        padding: 0 var(--spacing-md);
        max-width: 750px;
    }
}