/* --------- VARIABLES & RESET --------- */
:root {
    --bg-app: #09090b;
    /* Very Dark Zinc */
    --bg-panel: #18181b;
    /* Dark Zinc */
    --bg-input: #27272a;
    --border: #3f3f46;

    --primary: #6366f1;
    /* Indigo */
    --primary-hover: #4f46e5;
    --secondary: #27272a;
    --secondary-hover: #3f3f46;

    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;

    --font-ui: 'Space Grotesk', sans-serif;
    --font-num: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-ui);
    height: 100vh;
    overflow: hidden;
    /* Prevent full page scroll, manage inside areas */
}

/* --------- LAYOUT --------- */
.app-layout {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* --------- MAIN CANVAS AREA --------- */
.canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    overflow-y: auto;
    align-items: center;
    justify-content: center;
    background-image: radial-gradient(circle at 50% 50%, #1c1c22 0%, #09090b 100%);
}

header {
    width: 100%;
    max-width: 900px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo h1 span {
    font-weight: 400;
    color: var(--text-muted);
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-panel);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
}

.dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    /* Green */
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
}

/* Canvas Container styling */
#canvas-container {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
    /* Make sure canvas fits */
    display: flex;
}

/* Add this to ensure p5 canvas doesn't overflow if too huge */
#canvas-container canvas {
    display: block;
    max-width: 100%;
    height: auto !important;
}

.instruction-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* --------- SIDEBAR CONTROLS --------- */
aside {
    width: 340px;
    background: var(--bg-panel);
    border-left: 1px solid var(--border);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    overflow-y: auto;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    margin-bottom: 4px;
}

.group-header h3 {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-main);
}

/* Grid Logic */
.inputs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.full-width {
    grid-column: span 2;
}

/* Inputs styling */
.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
    height: 100%;
    /* Ensure wrapper fills grid cell */
    justify-content: flex-end;
    /* Push content to bottom */
}

/* Ensure labels stay at top if needed, but the main issue is input alignment */
.input-wrapper>input {
    margin-top: auto;
    /* Push input to bottom if height allows */
}

/* Override check for custom header */
.header-with-toggle {
    margin-bottom: auto;
    /* Push header to top */
}

label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

input[type="number"] {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px;
    color: var(--text-main);
    font-family: var(--font-num);
    font-size: 0.9rem;
    transition: all 0.2s ease;
    width: 100%;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Separator line */
.separator {
    height: 1px;
    background: var(--border);
    width: 100%;
}

/* Buttons */
.btn {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: none;
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: transform 0.1s, background-color 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--secondary-hover);
    border-color: #52525b;
}

/* Footer Link */
footer {
    margin-top: auto;
    padding-top: 20px;
    text-align: center;
}

.github-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
}

.github-link:hover {
    color: var(--text-main);
}

/* Scrollbar Customization */
aside::-webkit-scrollbar {
    width: 6px;
}

aside::-webkit-scrollbar-track {
    background: var(--bg-panel);
}

aside::-webkit-scrollbar-thumb {
    background: #3f3f46;
    border-radius: 3px;
}

/* RESPONSIVE DESIGN */
@media (max-width: 900px) {
    .app-layout {
        flex-direction: column;
        overflow-y: auto;
        /* Enable page scroll on mobile */
    }

    aside {
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border);
        padding-bottom: 40px;
    }

    .canvas-area {
        min-height: 60vh;
    }
}

/* --------- CUSTOM TOGGLE (Trajectory) --------- */
.header-with-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.traj-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: color 0.2s;
    user-select: none;
}

.traj-toggle:hover {
    color: var(--primary);
}

.traj-toggle input {
    display: none;
    /* Hide default checkbox */
}

/* Custom Checkbox visual */
.toggle-box {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.traj-toggle input:checked+.toggle-box {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
}

/* Using Phosphor icon class for the check, or just simple CSS check */
.traj-toggle input:checked+.toggle-box::after {
    content: '✔';
    font-size: 10px;
    color: white;
    display: block;
}