:root {
    --bg-color: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    --bg-blob-1: rgba(59, 130, 246, 0.4);
    --bg-blob-2: rgba(147, 51, 234, 0.3);
    
    --panel-bg: rgba(255, 255, 255, 0.4);
    --panel-border: rgba(255, 255, 255, 0.6);
    --card-bg: rgba(255, 255, 255, 0.5);
    
    --text-main: #0f172a;
    --text-muted: #475569;
    
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    
    --badge-bg: rgba(59, 130, 246, 0.15);
    --badge-text: #1d4ed8;
    
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.08);
}

[data-theme="dark"] {
    --bg-color: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --bg-blob-1: rgba(59, 130, 246, 0.15);
    --bg-blob-2: rgba(147, 51, 234, 0.15);
    
    --panel-bg: rgba(15, 23, 42, 0.4);
    --panel-border: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(255, 255, 255, 0.03);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --badge-bg: rgba(59, 130, 246, 0.2);
    --badge-text: #93c5fd;
    
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-color);
    color: var(--text-main);
    transition: background 0.4s ease, color 0.4s ease;
    line-height: 1.6;
    padding: 2rem;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Abstract blobs for premium glassmorphic look */
body::before, body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    transition: background 0.6s ease;
}

body::before {
    width: 500px;
    height: 500px;
    background: var(--bg-blob-1);
    top: -100px;
    left: -100px;
}

body::after {
    width: 600px;
    height: 600px;
    background: var(--bg-blob-2);
    bottom: -150px;
    right: -100px;
}

.theme-toggle {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
}

button {
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    padding: 0.6rem 1.2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#themeToggleBtn {
    background: var(--panel-bg);
    color: var(--text-main);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
#themeToggleBtn:hover {
    box-shadow: var(--glass-shadow);
    transform: translateY(-1px);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3.5rem;
    margin-top: 1rem;
}

header h1 {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
}

header p {
    color: var(--text-muted);
    font-size: 1.15rem;
}

.pipeline {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Premium Glassmorphic Panels */
.panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.panel.disabled {
    opacity: 0.4;
    pointer-events: none;
    filter: grayscale(0.5);
}

.stage-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1rem;
}

.badge {
    background: var(--badge-bg);
    color: var(--badge-text);
    padding: 0.3rem 0.8rem;
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.primary-btn {
    background: var(--primary);
    color: white;
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    width: 100%;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.39);
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.secondary-btn {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border: 1px solid rgba(37, 99, 235, 0.2);
}
.secondary-btn:hover {
    background: rgba(37, 99, 235, 0.15);
}

.danger-btn {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger);
    border: 1px solid rgba(220, 38, 38, 0.2);
}
.danger-btn:hover {
    background: rgba(220, 38, 38, 0.15);
}

.output-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    font-size: 1.05rem;
    line-height: 1.8;
}

.hidden {
    display: none !important;
}

.agent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.agent-card {
    background: var(--card-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.agent-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--glass-shadow);
}

.agent-card.processing {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary), var(--glass-shadow);
}

.agent-card.error {
    border-color: var(--danger);
    background: rgba(220, 38, 38, 0.05);
}

.agent-icon {
    margin-bottom: 1rem;
    color: var(--text-main);
    opacity: 0.8;
}

.agent-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.status {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.logs {
    list-style: none;
    font-size: 0.8rem;
    text-align: left;
    color: var(--danger);
}
.logs li {
    margin-top: 0.5rem;
    padding-left: 1.25rem;
    position: relative;
    line-height: 1.4;
}
.logs li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--danger);
}

.simulated-text span {
    transition: all 0.3s ease;
    border-radius: 3px;
}

.simulated-text span.highlight-danger {
    background-color: rgba(220, 38, 38, 0.15);
    border-bottom: 2px solid var(--danger);
}
.simulated-text span.highlight-warning {
    background-color: rgba(217, 119, 6, 0.15);
    border-bottom: 2px solid var(--warning);
}

.routing-box {
    padding: 1.5rem;
    text-align: center;
    font-weight: 500;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--panel-border);
}

.routing-box.action-required {
    background: rgba(220, 38, 38, 0.05);
    border-color: var(--danger);
    color: var(--danger);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    justify-content: center;
}

.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 1000;
}

.toast {
    background: var(--panel-bg);
    color: var(--text-main);
    border: 1px solid var(--panel-border);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    font-size: 0.95rem;
    font-weight: 500;
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateX(0);
}

.toast.toast-danger {
    border-left-color: var(--danger);
}

.app-footer {
    margin-top: 4rem;
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--panel-border);
}

.footer-brand {
    margin-bottom: 0.5rem;
}

.glowing-text {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: inline-block;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

[data-theme="dark"] .glowing-text {
    color: var(--primary-hover);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.02);
    }
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
}