:root {
    --black: #000000;
    --dark-gray: #333333;
    --light-gray: #cccccc;
    --white: #ffffff;
    --grey: var(--dark-gray);
}

body.light-theme {
    --bg: var(--white);
    --panel: var(--light-gray);
    --text: var(--black);
    --muted: var(--dark-gray);
    --brand: var(--light-gray);
    --brand-strong: var(--dark-gray);
    --accent: #f5f5f5;
    --border: #999999;
    --success: #22c55e;
    --danger: #ef4444;
}

body {
    --bg: var(--black);
    --panel: var(--dark-gray);
    --text: var(--light-gray);
    --muted: var(--light-gray);
    --brand: var(--dark-gray);
    --brand-strong: #1a1a1a;
    --accent: #2a2a2a;
    --border: #555555;
    --success: #22c55e;
    --danger: #ef4444;
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--brand);
    color: #fff;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
}

#menu-toggle {
    display: none;
    background: var(--panel);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 16px;
    cursor: pointer;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

#search-node {
    padding: 8px;
    font-size: 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
}

.jstree-search {
    font-size: 19px !important;
    font-weight: bold !important;
    /*color: green !important;*/
}

.container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
    padding: 20px;
    flex: 1;
    overflow: hidden;
}

.panel {
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border-radius: 12px;
    padding: 18px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    font-size: 18px;
    font-weight: 600;
}

#json-input {
    width: 100%;
    height: 100%;
    flex: 1;
    padding: 14px;
    background: var(--accent);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: monospace;
    font-size: 17px;
    resize: vertical;
}

#tree-container {
    flex: 1;
    padding: 12px;
    overflow: auto;
    min-height: 300px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--accent);
    color: var(--text);
}

#notification {
    display: none;
    position: fixed;
    top: 16px;
    right: 16px;
    background-color: var(--danger);
    color: #fff;
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 14px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

#format-status {
    position: fixed;
    bottom: 16px;
    left: 16px;
    background: var(--brand);
    color: #fff;
    padding: 10px 16px;
    border-radius: 12px;
    font-family: monospace;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    user-select: none;
}

.toggle .label {
    font-size: 14px;
    color: var(--text);
}

.toggle input {
    appearance: none;
    width: 50px;
    height: 28px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 999px;
    position: relative;
    cursor: pointer;
    outline: none;
    transition: background 0.25s ease, border-color 0.25s ease;
}

body.light-theme .toggle input {
    border-color: #999999;
    background: #e0e0e0;
}

.toggle input::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--brand);
    transform: translateY(-50%);
    transition: transform 0.25s ease;
}

body.light-theme .toggle input::after {
    background: #555555;
}

.toggle input:checked {
    background: var(--brand-strong);
}

.toggle input:checked::after {
    transform: translate(22px, -50%);
}

@media (max-width: 1024px) {
    .container { grid-template-columns: 1fr; grid-auto-rows: minmax(320px, auto); }
    .panel-header { flex-direction: column; align-items: flex-start; }
    #json-input, #tree-container { min-height: 300px; }
}

@media (max-width: 715px) {
    #menu-toggle { display: block; }

    .nav-controls {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        right: 16px;
        background: var(--panel);
        padding: 12px;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.25);
        z-index: 1000;
    }

    .nav-controls.show { display: flex; }
}