:root {
    --bg-color: #0d1117;
    --panel-bg: #161b22;
    --text-main: #c9d1d9;
    --text-primary: #3fb950;
    --text-secondary: #58a6ff;
    --border-color: #30363d;
    --danger-bg: rgba(248, 81, 73, 0.15);
    --danger-border: #f85149;
    --danger-text: #ff7b72;
}

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

body {
    font-family: 'Fira Code', monospace;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.app-container {
    max-width: 900px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hacker-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.hacker-header h1 {
    color: var(--text-primary);
    font-size: 1.8rem;
    letter-spacing: -0.02em;
}

.hacker-header p {
    color: var(--text-main);
    opacity: 0.7;
    font-size: 0.9rem;
    margin-top: 0.3rem;
}

.top-controls {
    display: flex;
    justify-content: space-between;
    background: var(--panel-bg);
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.type-toggle {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.type-toggle label {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-secondary);
}

.type-toggle input {
    accent-color: var(--text-secondary);
}

.special-bits {
    display: flex;
    gap: 1.5rem;
    padding: 0 1rem;
    font-size: 0.85rem;
    color: #8b949e;
}

.special-bits label {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.permission-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.perm-col {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.perm-col h2 {
    font-size: 1rem;
    color: var(--text-secondary);
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
}

.owner-col h2 {
    color: #d2a8ff;
}

.group-col h2 {
    color: #79c0ff;
}

.other-col h2 {
    color: #a5d6ff;
}

.perm-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.perm-check:hover {
    color: var(--text-primary);
}

.perm-check input {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--text-primary);
}

.inputs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    color: #8b949e;
}

.input-group input {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1.2rem;
    padding: 0.75rem;
    border-radius: 6px;
    outline: none;
    transition: all 0.2s;
}

.input-group input:focus {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px rgba(63, 185, 80, 0.2);
}

#output-format {
    color: var(--text-secondary);
    background: #0d1117;
    cursor: default;
}

.warning-panel {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger-text);
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
}

.warning-panel.hidden {
    display: none;
}

.explainer-panel {
    background: var(--panel-bg);
    border: 1px dashed var(--border-color);
    padding: 1.5rem;
    border-radius: 6px;
}

.explainer-header {
    font-weight: 700;
    color: #d2a8ff;
    margin-bottom: 1rem;
}

.explain-text {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.explain-text p {
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
}

.explain-text .owner {
    border-left-color: #d2a8ff;
}

.explain-text .group {
    border-left-color: #79c0ff;
}

.explain-text .other {
    border-left-color: #a5d6ff;
}

.command-box {
    background: #000;
    border: 1px solid var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.command-box .prompt {
    color: #8b949e;
    user-select: none;
}

.command-box .cmd-text {
    flex: 1;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.btn {
    background: var(--panel-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    transition: all 0.2s;
}

.btn:hover {
    background: var(--border-color);
    color: #fff;
}

@media (max-width: 768px) {

    .permission-matrix,
    .inputs-grid {
        grid-template-columns: 1fr;
    }
}