:root {
    --bg-color: #050810;
    --panel-bg: #0b1121;
    --accent-color: #06b6d4;
    --secondary-accent: #3b82f6;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

header {
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.main-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 25px;
}

.card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
}

.controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

.control-group label span {
    color: var(--accent-color);
}

input[type=range] {
    width: 100%;
    accent-color: var(--accent-color);
    cursor: pointer;
}

.info-display {
    margin-top: 15px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
}

.info-item {
    margin-bottom: 5px;
}

.info-label {
    color: var(--text-muted);
}

.canvas-container {
    position: relative;
    width: 100%;
    min-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    border-radius: 12px;
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.1);
}

.formula-card {
    grid-column: 1 / -1;
}

.math {
    font-family: 'Cambria Math', 'Times New Roman', serif;
    font-size: 1.2rem;
    text-align: center;
    padding: 10px;
}

.zeros-card {
    margin-top: 20px;
    padding: 15px !important;
}

.zeros-card h3 {
    font-size: 0.9rem;
    margin-bottom: 10px;
    color: var(--accent-color);
}

.zeros-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.zero-chip {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-family: 'Fira Code', monospace;
    color: var(--accent-color);
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}