:root {
    --bg-base: #020617;
    --bg-panel: rgba(15, 23, 42, 0.7);
    --bg-sub: rgba(30, 41, 59, 0.5);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-1: #38bdf8; /* Sky 400 */
    --accent-2: #818cf8; /* Indigo 400 */
    --accent-3: #f472b6; /* Pink 400 */
    
    --success: #34d399;
    --warning: #fbbf24;
    --error: #fb7185;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Background Animation */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(120px);
    opacity: 0.2;
    border-radius: 50%;
    animation: float 25s infinite alternate ease-in-out;
}

.blob-1 {
    top: -20%;
    left: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--accent-1), var(--accent-2));
}

.blob-2 {
    bottom: -15%;
    right: -5%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, var(--accent-2), var(--accent-3));
    animation-delay: -12s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    100% { transform: translate(100px, 50px) scale(1.1) rotate(15deg); }
}

/* Layout */
.container {
    max-width: 1800px;
    height: 100vh;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.app-header {
    text-align: left;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.app-header h1 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-header p {
    color: var(--accent-1);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.app-grid {
    display: grid;
    grid-template-columns: 320px 1fr 360px;
    gap: 1.5rem;
    flex: 1;
    min-height: 0;
}

/* Components */
.glass {
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    display: flex;
    flex-direction: column;
    min-height: 0;
    transition: border-color 0.3s ease;
}

.panel {
    padding: 1.5rem;
    overflow: hidden;
}

.panel:hover {
    border-color: var(--border-hover);
}

.panel-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Inputs */
.input-group {
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"], textarea, select {
    width: 100%;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
}

input[type="text"]:focus, textarea:focus, select:focus {
    background: rgba(15, 23, 42, 0.6);
    border-color: var(--accent-1);
    box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.1);
}

/* Buttons */
.btn {
    width: 100%;
    padding: 0.75rem 1.5rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 700;
    font-family: var(--font-heading);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
}

.btn.primary {
    background: var(--bg-sub);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn.primary:not(:disabled):hover {
    background: rgba(51, 65, 85, 0.8);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.btn.action {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
}

.btn.action:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(56, 189, 248, 0.4);
    filter: brightness(1.1);
}

.btn.action:active {
    transform: translateY(0);
}

/* Engine Status */
.model-loader {
    background: var(--bg-sub);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.engine-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--error);
    box-shadow: 0 0 10px var(--error);
}

.status-indicator.ready {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
}

/* Progress */
.progress-container {
    height: 6px;
    background: rgba(2, 6, 23, 0.5);
    border-radius: 99px;
    margin-top: 1rem;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(to right, var(--accent-1), var(--accent-2));
    border-radius: 99px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    text-align: center;
    font-weight: 500;
}

/* Result Cards */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    overflow-y: auto;
    padding-right: 0.5rem;
    flex: 1;
}

.level-card {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    position: relative;
    animation: reveal 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes reveal {
    from { opacity: 0; transform: translateY(10px) scale(0.99); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.level-badge {
    font-size: 0.6rem;
    font-weight: 800;
    color: var(--accent-1);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
    display: block;
}

.level-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
    line-height: 1.2;
}

.level-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(15, 23, 42, 0.6);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    display: inline-block;
}

.confidence-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.conf-bar-bg {
    flex: 1;
    height: 4px;
    background: rgba(15, 23, 42, 0.6);
    border-radius: 99px;
}

.conf-bar-fill {
    height: 100%;
    border-radius: 99px;
    background: var(--accent-1);
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reasoning {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-style: italic;
}

/* Accordions (Footers) */
.accordion {
    flex-shrink: 0;
    background: rgba(2, 6, 23, 0.4);
    border-top: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.accordion-header {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    user-select: none;
}

.accordion-header:hover {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.accordion-header svg {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-muted);
}

.accordion.open .accordion-header svg {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.accordion.open .accordion-content {
    max-height: 600px;
    overflow-y: auto;
}

.trace-log {
    padding: 1.25rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.trace-entry {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.trace-entry:last-child { border-bottom: none; }

.trace-error { color: var(--error); }
.trace-success { color: var(--success); }
.trace-info { color: var(--accent-1); }

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Responsive */
@media (max-width: 1200px) {
    .app-grid { grid-template-columns: 320px 1fr; }
    .details-panel { display: none !important; }
}

@media (max-width: 900px) {
    .container { padding: 1rem; overflow-y: auto; height: auto; }
    .app-grid { grid-template-columns: 1fr; height: auto; }
    .glass { height: auto; min-height: 400px; }
    body { overflow-y: auto; height: auto; }
}

.hidden { display: none !important; }
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
    font-size: 0.9rem;
    padding: 2rem;
    gap: 1rem;
}

.final-summary {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(129, 140, 248, 0.1));
    border: 1px solid var(--accent-1);
    padding: 2rem;
    text-align: center;
    border-radius: var(--radius-lg);
    animation: popIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
    0% { opacity: 0; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}