/* Reset */

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


/* Theme Variables */

:root {
    --bg-dark: #0f172a;
    --panel-dark: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.15);
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --text-light: #e5e7eb;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}


/* Body */

body {
    font-family: "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #1e293b, #020617);
    color: var(--text-light);
    min-height: 100vh;
    padding: 20px;
}


/* App Container */

.app-container {
    max-width: 1200px;
    margin: auto;
}


/* Header */

.app-header {
    text-align: center;
    margin-bottom: 20px;
}

.app-header h1 {
    font-size: 32px;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}


/* Layout */

.main-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
}


/* Sidebar */

.sidebar {
    background: var(--panel-dark);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.sidebar h2 {
    margin-bottom: 15px;
}


/* Control Groups */

.control-group {
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}


/* Inputs */

input[type="text"] {
    padding: 10px;
    border-radius: 8px;
    border: none;
    outline: none;
    background: #1e293b;
    color: white;
}


/* Buttons */

button {
    padding: 10px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    font-weight: 500;
    transition: all 0.25s ease;
}

button:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #818cf8, #6366f1);
}


/* Reset button special color */

.reset-btn {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.reset-btn:hover {
    background: linear-gradient(135deg, #f87171, #ef4444);
}


/* Graph Section */

.graph-section {
    background: var(--panel-dark);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 20px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: center;
    align-items: center;
}


/* Canvas */

#graph-canvas {
    border-radius: 10px;
    background: #020617;
}


/* Info Panel */

.info-panel {
    margin-top: 20px;
    background: var(--panel-dark);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: 14px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.info-panel h2 {
    margin-bottom: 10px;
}


/* Slider */

input[type="range"] {
    width: 100%;
    cursor: pointer;
}