:root {
    --primary: #6366f1;
    --primary-soft: rgba(99, 102, 241, 0.08);
    --surface: #ffffff;
    --background: #fcfdfe;
}
body {
    font-family: 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
    background-color: var(--background);
    color: #1e293b;
    letter-spacing: -0.01em;
}

/* 布局装饰 */
.bg-mesh {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.03) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.03) 0px, transparent 50%);
}

/* 侧边栏玻璃拟态 */
.glass-sidebar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
}

.auth-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.auth-card {
    background: white;
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    border-radius: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.custom-scrollbar::-webkit-scrollbar { width: 4px; }
.custom-scrollbar::-webkit-scrollbar-thumb { background: #e2e8f0; border-radius: 10px; }

.btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    transition: all 0.3s ease;
}

.logo-box {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.image-frame {
    background: #ffffff;
    padding: 12px;
    border-radius: 3rem;
    box-shadow: 0 20px 50px -10px rgba(0,0,0,0.1);
}

/* Keep generated queues compact and easy to scan. */
.queue-image-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: start;
}

.queue-image-item {
    /* Four items fill a row when possible; fewer items stay grouped at left. */
    flex: 0 1 clamp(220px, calc((100% - 2.25rem) / 4), 320px);
    width: clamp(220px, calc((100% - 2.25rem) / 4), 320px);
    max-width: 320px;
    min-width: 0;
}

.generation-error-frame {
    display: flex;
    align-items: center;
    min-height: 200px;
    padding: 20px;
    overflow: hidden;
    border: 1px solid #fecdd3;
    border-radius: 8px;
    background: #fff1f2;
    box-shadow: none;
}

.generation-error-message {
    width: 100%;
    min-width: 0;
    max-height: 12rem;
    margin: 0;
    overflow-y: auto;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
    color: #be123c;
    font-size: 12px;
    line-height: 1.6;
}

@media (max-width: 520px) {
    .queue-image-item {
        flex-basis: 100%;
        width: 100%;
        max-width: none;
    }
}

/* 现代化通知系统 */
.toast-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    pointer-events: none;
}

.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.2);
    border-left: 4px solid #6366f1;
    min-width: 300px;
    max-width: 400px;
    pointer-events: auto;
    animation: slideInRight 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast.success { border-left-color: #10b981; }
.toast.error { border-left-color: #ef4444; }
.toast.warning { border-left-color: #f59e0b; }
.toast.info { border-left-color: #3b82f6; }

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}