/* ============================================================
   Keyboard Shortcut Cheat Sheet — Styles
   Dark mode, keyboard key chips, print-optimized
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #7C3AED;
    --primary-light: #A78BFA;
    --bg: #111827;
    --bg-elevated: #1F2937;
    --bg-surface: #374151;
    --bg-card: #1F2937;
    --bg-hover: #4B5563;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    --border: #374151;
    --key-bg: #374151;
    --key-border: #4B5563;
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-primary);
    min-height: 100vh;
}

.app {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 80px;
}

.header {
    text-align: center;
    padding: 28px 0 16px;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 800;
}

.header p {
    color: var(--text-secondary);
    font-size: .9rem;
    margin-top: 4px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 150ms;
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: .8rem;
}

.toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.search-input {
    flex: 1;
    min-width: 180px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: .85rem;
    outline: none;
}

.search-input:focus {
    border-color: var(--primary);
}

select.app-select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: .85rem;
    outline: none;
    appearance: none;
    cursor: pointer;
}

/* --- Category tabs --- */
.cat-tabs {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.cat-tab {
    padding: 4px 12px;
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: .75rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: all 150ms;
}

.cat-tab:hover {
    background: var(--bg-surface);
}

.cat-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* --- Shortcut Grid --- */
.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 10px;
}

.shortcut-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.shortcut-action {
    font-size: .85rem;
    flex: 1;
}

.shortcut-keys {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    min-width: 28px;
    height: 28px;
    background: var(--key-bg);
    border: 1px solid var(--key-border);
    border-bottom-width: 3px;
    border-radius: 6px;
    font-size: .75rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
}

.key-plus {
    color: var(--text-muted);
    font-size: .7rem;
    margin: 0 2px;
    display: flex;
    align-items: center;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    font-size: .85rem;
    opacity: 0;
    pointer-events: none;
    transition: all 200ms;
    z-index: 200;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media print {
    body {
        background: #fff;
        color: #111;
    }

    .toolbar,
    .header,
    .cat-tabs,
    .toast {
        display: none !important;
    }

    .app {
        max-width: 100%;
        padding: 0;
    }

    .shortcut-grid {
        grid-template-columns: 1fr 1fr;
    }

    .shortcut-card {
        border-color: #ddd;
    }

    .key {
        background: #eee;
        border-color: #ccc;
        color: #111;
    }
}