/**
 * Veelearn Keyboard Shortcuts CSS
 * Styles for keyboard shortcuts help modal
 */

.keyboard-help-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10002;
    backdrop-filter: blur(4px);
}

.keyboard-help-content {
    background: white;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: helpModalSlideIn 0.3s ease-out;
}

@keyframes helpModalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.keyboard-help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid #e5e7eb;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px 12px 0 0;
}

.keyboard-help-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: white;
}

.keyboard-help-header .close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    font-size: 28px;
    color: white;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background 0.2s;
}

.keyboard-help-header .close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.keyboard-help-body {
    padding: 24px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e5e7eb;
}

.shortcut-item:last-child {
    border-bottom: none;
}

.shortcut-item kbd {
    background: #f3f4f6;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    padding: 4px 8px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    margin-right: 16px;
    min-width: 80px;
    text-align: center;
}

.shortcut-item span {
    color: #6b7280;
    font-size: 14px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .keyboard-help-content {
        background: #1f2937;
    }

    .keyboard-help-header {
        border-bottom-color: #374151;
    }

    .keyboard-help-body {
        padding: 24px;
    }

    .shortcut-item {
        border-bottom-color: #374151;
    }

    .shortcut-item kbd {
        background: #374151;
        border-color: #4b5563;
        color: #e5e7eb;
    }

    .shortcut-item span {
        color: #9ca3af;
    }
}

/* Responsive design */
@media (max-width: 640px) {
    .keyboard-help-content {
        width: 95%;
        margin: 16px;
    }

    .keyboard-help-header {
        padding: 16px 20px;
    }

    .keyboard-help-body {
        padding: 20px;
    }

    .shortcut-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .shortcut-item kbd {
        margin-right: 0;
        min-width: auto;
    }
}